drm/amd/display: Further fix of psr eDP p-state warning

[Why]
psr doesn't get fully disabled before hitting hubbub1_wm_change_req_wa.

[How]
Pass TRUE to "wait" parameter to get psr fully disabled.

Follow-Up fix to:
dc: PSR eDP p-state warning occurs intermittently after unplug DP
Signed-off-by: NFangzhi Zuo <Jerry.Zuo@amd.com>
Acked-by: NAurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc.c

@@ -2986,7 +2986,7 @@ bool dc_set_psr_allow_active(struct dc *dc, bool enable)
 			if (enable && !link->psr_settings.psr_allow_active)
 				return dc_link_set_psr_allow_active(link, true, false);
 			else if (!enable && link->psr_settings.psr_allow_active)
-				return dc_link_set_psr_allow_active(link, false, false);
+				return dc_link_set_psr_allow_active(link, false, true);
 		}
 	}