drm/amdgpu: make amdgpu_display_framebuffer_init() static

It's not used outside of amdgpu_display.c.
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_display.c

@@ -41,6 +41,11 @@
 #include <drm/drm_fourcc.h>
 #include <drm/drm_vblank.h>
 
+static int amdgpu_display_framebuffer_init(struct drm_device *dev,
+					   struct amdgpu_framebuffer *rfb,
+					   const struct drm_mode_fb_cmd2 *mode_cmd,
+					   struct drm_gem_object *obj);
+
 static void amdgpu_display_flip_callback(struct dma_fence *f,
 					 struct dma_fence_cb *cb)
 {
@@ -1099,7 +1104,7 @@ int amdgpu_display_gem_fb_verify_and_init(
 	return ret;
 }
 
-int amdgpu_display_framebuffer_init(struct drm_device *dev,
+static int amdgpu_display_framebuffer_init(struct drm_device *dev,
 					   struct amdgpu_framebuffer *rfb,
 					   const struct drm_mode_fb_cmd2 *mode_cmd,
 					   struct drm_gem_object *obj)

drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h

@@ -600,10 +600,6 @@ int amdgpu_display_gem_fb_verify_and_init(
 	struct drm_device *dev, struct amdgpu_framebuffer *rfb,
 	struct drm_file *file_priv, const struct drm_mode_fb_cmd2 *mode_cmd,
 	struct drm_gem_object *obj);
-int amdgpu_display_framebuffer_init(struct drm_device *dev,
-				    struct amdgpu_framebuffer *rfb,
-				    const struct drm_mode_fb_cmd2 *mode_cmd,
-				    struct drm_gem_object *obj);
 
 int amdgpufb_remove(struct drm_device *dev, struct drm_framebuffer *fb);