disp: msm: add support for seamless dsc switch

This change adds logic to determine dsc switch based on
the connector property "CONNECTOR_PROP_DSC_MODE" and
performs seamless DSC switch if there is any change in
DSC configuration. The connector property is populated
in msm_sub_mode based on which suitable mode is selected.

Change-Id: Ifc4931f16dfb814781bc1d72b103e09103e6bfee
Signed-off-by: Yashwanth <yvulapu@codeaurora.org>

msm/sde/sde_rm.h

@@ -33,6 +33,14 @@
 		x == SDE_RM_TOPOLOGY_QUADPIPE_DSCMERGE ||\
 		x == SDE_RM_TOPOLOGY_QUADPIPE_DSC4HSMERGE)
 
+#define TOPOLOGY_DSC_MODE(x) \
+	(x == SDE_RM_TOPOLOGY_SINGLEPIPE_DSC ||\
+		x == SDE_RM_TOPOLOGY_DUALPIPE_DSC ||\
+		x == SDE_RM_TOPOLOGY_DUALPIPE_3DMERGE_DSC ||\
+		x == SDE_RM_TOPOLOGY_DUALPIPE_DSCMERGE ||\
+		x == SDE_RM_TOPOLOGY_QUADPIPE_3DMERGE_DSC ||\
+		x == SDE_RM_TOPOLOGY_QUADPIPE_DSCMERGE ||\
+		x == SDE_RM_TOPOLOGY_QUADPIPE_DSC4HSMERGE)
 /**
  * enum sde_rm_topology_name - HW resource use case in use by connector
  * @SDE_RM_TOPOLOGY_NONE:                 No topology in use currently