drm/amd/powerplay: hold on the arcturus gfx dpm support in driver

As for now, only "Prefetcher" is guarded to be working from
SMU firmware.

Signed-off-by: Evan Quan <[e-mail]>
Reviewed-by: Hawking Zhang <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/powerplay/arcturus_ppt.c

···
 
 	memset(feature_mask, 0, sizeof(uint32_t) * num);
 
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DPM_PREFETCHER_BIT)
-				| FEATURE_MASK(FEATURE_DPM_GFXCLK_BIT);
+	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DPM_PREFETCHER_BIT);
 
 	return 0;
 }