drm/amd/display: Add COEF filter types for DCN401

Add VERTICAL_BLUR_SCALE & HORIZONTAL_BLUR_SCALE types.
Reviewed-by: Jun Lei <jun.lei@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Samson Tam <samson.tam@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dpp/dcn401/dcn401_dpp_dscl.c

@@ -56,7 +56,9 @@ enum dcn401_coef_filter_type_sel {
 	SCL_COEF_CHROMA_VERT_FILTER = 2,
 	SCL_COEF_CHROMA_HORZ_FILTER = 3,
 	SCL_COEF_ALPHA_VERT_FILTER = 4,
-	SCL_COEF_ALPHA_HORZ_FILTER = 5
+	SCL_COEF_ALPHA_HORZ_FILTER = 5,
+	SCL_COEF_VERTICAL_BLUR_SCALE = SCL_COEF_ALPHA_VERT_FILTER,
+	SCL_COEF_HORIZONTAL_BLUR_SCALE = SCL_COEF_ALPHA_HORZ_FILTER
 };
 
 enum dscl_autocal_mode {