sdm: drm: Add source side post processing feature support

Refactor hw_color_manager to add source side post processing
feature support.

Change-Id: Ibefed203d991b0924bbc1998d5126322766d76d2
Crs-fixed: 2201273
diff --git a/libdrmutils/drm_interface.h b/libdrmutils/drm_interface.h
index 4123882..6b9ec95 100644
--- a/libdrmutils/drm_interface.h
+++ b/libdrmutils/drm_interface.h
@@ -550,6 +550,10 @@
   kFeaturePAMemColSky,
   kFeaturePAMemColFoliage,
   kFeaturePAMemColProt,
+  kFeatureDgmIgc,
+  kFeatureDgmGc,
+  kFeatureVigIgc,
+  kFeatureVigGamut,
   kPPFeaturesMax,
 };