drm/amd/display: add Renoir to kconfig

Add a kconfig option to enable renoir.
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/Kconfig

@@ -26,6 +26,14 @@ config DRM_AMD_DC_DCN2_0
 	    Choose this option if you want to have
 	    Navi support for display engine
 
+config DRM_AMD_DC_DCN2_1
+        bool "DCN 2.1 family"
+        depends on DRM_AMD_DC && X86
+        depends on DRM_AMD_DC_DCN2_0
+        help
+            Choose this option if you want to have
+            Renoir support for display engine
+
 config DRM_AMD_DC_DSC_SUPPORT
 	bool "DSC support"
 	default y