drm/amd/powerplay/cz: disable vce pg

BugLink: http://bugs.launchpad.net/bugs/1546572

Not working reliably yet.
Reviewed-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 67a0a0fd)
Signed-off-by: Alberto Milone <alberto.milone@canonical.com>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

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

@@ -249,6 +249,9 @@ static int cz_initialize_dpm_defaults(struct pp_hwmgr *hwmgr)
 
 	phm_cap_unset(hwmgr->platform_descriptor.platformCaps,
 		      PHM_PlatformCaps_UVDPowerGating);
+	phm_cap_unset(hwmgr->platform_descriptor.platformCaps,
+		      PHM_PlatformCaps_VCEPowerGating);
+
 	return 0;
 }