drm/amd/display: Add FORCE_HDR timing flag

Signed-off-by: Zeyu Fan <Zeyu.Fan@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dc_hw_types.h

@@ -635,6 +635,8 @@ struct dc_crtc_timing_flags {
 	uint32_t YCBCR420 :1; /* TODO: shouldn't need this flag, should be a separate pixel format */
 	uint32_t DTD_COUNTER :5; /* values 1 to 16 */
 
+	uint32_t FORCE_HDR :1;
+
 	/* HDMI 2.0 - Support scrambling for TMDS character
 	 * rates less than or equal to 340Mcsc */
 	uint32_t LTE_340MCSC_SCRAMBLE:1;