drm/amd/powerplay: Tidy up cz_dpm_powerdown_vce()

Use PP_CAP macro.
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/powerplay/hwmgr/cz_hwmgr.c

@@ -1361,8 +1361,7 @@ int  cz_dpm_update_vce_dpm(struct pp_hwmgr *hwmgr)
 
 int cz_dpm_powerdown_vce(struct pp_hwmgr *hwmgr)
 {
-	if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
-					 PHM_PlatformCaps_VCEPowerGating))
+	if (PP_CAP(PHM_PlatformCaps_VCEPowerGating))
 		return smum_send_msg_to_smc(hwmgr,
 						     PPSMC_MSG_VCEPowerOFF);
 	return 0;