drm/radeon/radeon_audio: Move 'dce3_2_*' prototypes to shared location

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/radeon/dce3_1_afmt.c:30:6: warning: no previous prototype for ‘dce3_2_afmt_hdmi_write_speaker_allocation’ [-Wmissing-prototypes]
 30 | void dce3_2_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
 | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 drivers/gpu/drm/radeon/dce3_1_afmt.c:48:6: warning: no previous prototype for ‘dce3_2_afmt_dp_write_speaker_allocation’ [-Wmissing-prototypes]
 48 | void dce3_2_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
 | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 drivers/gpu/drm/radeon/dce3_1_afmt.c:66:6: warning: no previous prototype for ‘dce3_2_afmt_write_sad_regs’ [-Wmissing-prototypes]
 66 | void dce3_2_afmt_write_sad_regs(struct drm_encoder *encoder,
 | ^~~~~~~~~~~~~~~~~~~~~~~~~~
 drivers/gpu/drm/radeon/dce3_1_afmt.c:116:6: warning: no previous prototype for ‘dce3_2_audio_set_dto’ [-Wmissing-prototypes]
 116 | void dce3_2_audio_set_dto(struct radeon_device *rdev,
 | ^~~~~~~~~~~~~~~~~~~~
 drivers/gpu/drm/radeon/dce3_1_afmt.c:170:6: warning: no previous prototype for ‘dce3_2_hdmi_update_acr’ [-Wmissing-prototypes]
 170 | void dce3_2_hdmi_update_acr(struct drm_encoder *encoder, long offset,
 | ^~~~~~~~~~~~~~~~~~~~~~
 drivers/gpu/drm/radeon/dce3_1_afmt.c:202:6: warning: no previous prototype for ‘dce3_2_set_audio_packet’ [-Wmissing-prototypes]
 202 | void dce3_2_set_audio_packet(struct drm_encoder *encoder, u32 offset)
 | ^~~~~~~~~~~~~~~~~~~~~~~
 drivers/gpu/drm/radeon/dce3_1_afmt.c:223:6: warning: no previous prototype for ‘dce3_2_set_mute’ [-Wmissing-prototypes]
 223 | void dce3_2_set_mute(struct drm_encoder *encoder, u32 offset, bool mute)
 | ^~~~~~~~~~~~~~~

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Slava Grigorev <slava.grigorev@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/radeon/radeon_audio.c

@@ -38,16 +38,10 @@ void dce6_audio_enable(struct radeon_device *rdev, struct r600_audio_pin *pin,
 u32 dce6_endpoint_rreg(struct radeon_device *rdev, u32 offset, u32 reg);
 void dce6_endpoint_wreg(struct radeon_device *rdev,
 		u32 offset, u32 reg, u32 v);
-void dce3_2_afmt_write_sad_regs(struct drm_encoder *encoder,
-		struct cea_sad *sads, int sad_count);
 void evergreen_hdmi_write_sad_regs(struct drm_encoder *encoder,
 		struct cea_sad *sads, int sad_count);
 void dce6_afmt_write_sad_regs(struct drm_encoder *encoder,
 		struct cea_sad *sads, int sad_count);
-void dce3_2_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
-		u8 *sadb, int sad_count);
-void dce3_2_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
-		u8 *sadb, int sad_count);
 void dce4_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
 		u8 *sadb, int sad_count);
 void dce4_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
@@ -65,8 +59,6 @@ struct r600_audio_pin* dce6_audio_get_pin(struct radeon_device *rdev);
 void dce6_afmt_select_pin(struct drm_encoder *encoder);
 void r600_hdmi_audio_set_dto(struct radeon_device *rdev,
 	struct radeon_crtc *crtc, unsigned int clock);
-void dce3_2_audio_set_dto(struct radeon_device *rdev,
-	struct radeon_crtc *crtc, unsigned int clock);
 void dce4_hdmi_audio_set_dto(struct radeon_device *rdev,
 	struct radeon_crtc *crtc, unsigned int clock);
 void dce4_dp_audio_set_dto(struct radeon_device *rdev,
@@ -81,8 +73,6 @@ void evergreen_set_avi_packet(struct radeon_device *rdev, u32 offset,
 	unsigned char *buffer, size_t size);
 void r600_hdmi_update_acr(struct drm_encoder *encoder, long offset,
 	const struct radeon_hdmi_acr *acr);
-void dce3_2_hdmi_update_acr(struct drm_encoder *encoder, long offset,
-	const struct radeon_hdmi_acr *acr);
 void evergreen_hdmi_update_acr(struct drm_encoder *encoder, long offset,
 	const struct radeon_hdmi_acr *acr);
 void r600_set_vbi_packet(struct drm_encoder *encoder, u32 offset);
@@ -90,10 +80,8 @@ void dce4_set_vbi_packet(struct drm_encoder *encoder, u32 offset);
 void dce4_hdmi_set_color_depth(struct drm_encoder *encoder,
 	u32 offset, int bpc);
 void r600_set_audio_packet(struct drm_encoder *encoder, u32 offset);
-void dce3_2_set_audio_packet(struct drm_encoder *encoder, u32 offset);
 void dce4_set_audio_packet(struct drm_encoder *encoder, u32 offset);
 void r600_set_mute(struct drm_encoder *encoder, u32 offset, bool mute);
-void dce3_2_set_mute(struct drm_encoder *encoder, u32 offset, bool mute);
 void dce4_set_mute(struct drm_encoder *encoder, u32 offset, bool mute);
 static void radeon_audio_hdmi_mode_set(struct drm_encoder *encoder,
 	struct drm_display_mode *mode);

drivers/gpu/drm/radeon/radeon_audio.h

@@ -81,4 +81,16 @@ void radeon_audio_mode_set(struct drm_encoder *encoder,
 void radeon_audio_dpms(struct drm_encoder *encoder, int mode);
 unsigned int radeon_audio_decode_dfs_div(unsigned int div);
 
+void dce3_2_afmt_write_sad_regs(struct drm_encoder *encoder,
+				struct cea_sad *sads, int sad_count);
+void dce3_2_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
+					       u8 *sadb, int sad_count);
+void dce3_2_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
+					     u8 *sadb, int sad_count);
+void dce3_2_audio_set_dto(struct radeon_device *rdev,
+			  struct radeon_crtc *crtc, unsigned int clock);
+void dce3_2_hdmi_update_acr(struct drm_encoder *encoder, long offset,
+			    const struct radeon_hdmi_acr *acr);
+void dce3_2_set_audio_packet(struct drm_encoder *encoder, u32 offset);
+void dce3_2_set_mute(struct drm_encoder *encoder, u32 offset, bool mute);
 #endif