disp: msm: dp: add colorspace property for MSM DP

Add the colorspace property for DP controller for MSM. Also, change
the default method to send the colorimetry information to the sink
from MISC bits of MSA to VSC SDP packets if the sink supports it. This
helps to avoid dynamic switches between the packet types for sending
the colorimetry information during BT2020 and DCI-P3 use-cases.

Change-Id: I7ddf879a187b023fcf7404d64028e4d19b031119
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>

msm/dp/dp_drm.h

@@ -37,6 +37,27 @@ int dp_connector_config_hdr(struct drm_connector *connector,
 		void *display,
 		struct sde_connector_state *c_state);
 
+/**
+ * dp_connector_atomic_check - callback to perform atomic
+ * check for DP
+ * @connector: Pointer to drm connector structure
+ * @display: Pointer to private display handle
+ * @c_state: connect state data
+ * Returns: Zero on success
+ */
+int dp_connector_atomic_check(struct drm_connector *connector,
+	void *display,
+	struct drm_connector_state *c_state);
+
+/**
+ * dp_connector_set_colorspace - callback to set new colorspace
+ * @connector: Pointer to drm connector structure
+ * @display: Pointer to private display handle
+ * Returns: Zero on success
+ */
+int dp_connector_set_colorspace(struct drm_connector *connector,
+	void *display);
+
 /**
  * dp_connector_post_init - callback to perform additional initialization steps
  * @connector: Pointer to drm connector structure