drm/amd/display: Add DML variable for future asics

Signed-off-by: Joshua Aberback <joshua.aberback@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dml/display_mode_structs.h

@@ -121,6 +121,7 @@ struct _vcs_dpi_soc_bounding_box_st {
 };
 
 struct _vcs_dpi_ip_params_st {
+	bool use_min_dcfclk;
 	bool gpuvm_enable;
 	bool hostvm_enable;
 	unsigned int gpuvm_max_page_table_levels;

drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.c

@@ -280,6 +280,7 @@ static void fetch_ip_params(struct display_mode_lib *mode_lib)
 	ip_params_st *ip = &mode_lib->vba.ip;
 
 	// IP Parameters
+	mode_lib->vba.UseMinimumRequiredDCFCLK = ip->use_min_dcfclk;
 	mode_lib->vba.MaxNumDPP = ip->max_num_dpp;
 	mode_lib->vba.MaxNumOTG = ip->max_num_otg;
 	mode_lib->vba.MaxNumHDMIFRLOutputs = ip->max_num_hdmi_frl_outputs;

drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h

@@ -898,6 +898,7 @@ struct vba_vars_st {
 	bool dummystring[DC__NUM_DPP__MAX];
 	double BPP;
 	enum odm_combine_policy ODMCombinePolicy;
+	bool UseMinimumRequiredDCFCLK;
 };
 
 bool CalculateMinAndMaxPrefetchMode(