drm/amd/display: fix PHYCLK in formula.

Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@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/calcs/dcn_calc_auto.c

@@ -277,7 +277,7 @@ void mode_support_and_system_configuration(struct dcn_bw_internal_vars *v)
 			default:
 				break;
 			}
-			v->required_phyclk[k] = v->required_output_bw / 3.0;
+			v->required_phyclk[k] = v->required_phyclk[k] / 3.0;
 		}
 		else if (v->output[k] == dcn_bw_dp) {
 			v->required_phyclk[k] = v->required_output_bw / 4.0;