drm/amd/display: Add dc_lut_mode enum

Signed-off-by: NVitaly Prosyak <vitaly.prosyak@amd.com>
Reviewed-by: NTony Cheng <Tony.Cheng@amd.com>
Acked-by: NHarry Wentland <harry.wentland@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/inc/hw/hw_shared.h

@@ -191,4 +191,9 @@ enum controller_dp_test_pattern {
 	CONTROLLER_DP_TEST_PATTERN_COLORSQUARES_CEA
 };
 
+enum dc_lut_mode {
+	LUT_BYPASS,
+	LUT_RAM_A,
+	LUT_RAM_B
+};
 #endif /* __DAL_HW_SHARED_H__ */