drm/i915/dpt: Introduce HAS_DPT()

Replace the hand rolled DISPLAY_VER check for a more descriptive
HAS_DPT() macro. Will be used on more than one place later.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230320090522.9909-4-ville.syrjala@linux.intel.comReviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>

drivers/gpu/drm/i915/display/intel_fb.c

@@ -718,7 +718,7 @@ static unsigned int intel_fb_modifier_to_tiling(u64 fb_modifier)
 
 static bool intel_modifier_uses_dpt(struct drm_i915_private *i915, u64 modifier)
 {
-	return DISPLAY_VER(i915) >= 13 && modifier != DRM_FORMAT_MOD_LINEAR;
+	return HAS_DPT(i915) && modifier != DRM_FORMAT_MOD_LINEAR;
 }
 
 bool intel_fb_uses_dpt(const struct drm_framebuffer *fb)

drivers/gpu/drm/i915/i915_drv.h

@@ -809,6 +809,8 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 #define HAS_FBC(dev_priv)	(RUNTIME_INFO(dev_priv)->fbc_mask != 0)
 #define HAS_CUR_FBC(dev_priv)	(!HAS_GMCH(dev_priv) && DISPLAY_VER(dev_priv) >= 7)
 
+#define HAS_DPT(dev_priv)	(DISPLAY_VER(dev_priv) >= 13)
+
 #define HAS_IPS(dev_priv)	(IS_HSW_ULT(dev_priv) || IS_BROADWELL(dev_priv))
 
 #define HAS_DP_MST(dev_priv)	(INTEL_INFO(dev_priv)->display.has_dp_mst)