drm/amd/pm: disable the gfxoff feature temporarily for SMU 13.0.0

There is a known "sdma busy" issue with gfxoff enabled. Let's disable
the gfxoff feature temporarily until that issue is fixed.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Likun Gao <Likun.Gao@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c

@@ -228,8 +228,10 @@ smu_v13_0_0_get_allowed_feature_mask(struct smu_context *smu,
 	if (adev->pm.pp_feature & PP_SOCCLK_DPM_MASK)
 		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DPM_SOCCLK_BIT);
 
+#if 0
 	if (adev->pm.pp_feature & PP_GFXOFF_MASK)
 		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_GFXOFF_BIT);
+#endif
 
 	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_THROTTLERS_BIT);
 	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_FAN_CONTROL_BIT);