Revert "drm/amdgpu: skip suspend/resume on DRM_SWITCH_POWER_DYNAMIC_OFF"

This is not necessary as pointed out by Lukas Wunner.

This reverts commit f46cf373.

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

@@ -1842,8 +1842,7 @@ int amdgpu_device_suspend(struct drm_device *dev, bool suspend, bool fbcon)
 
 	adev = dev->dev_private;
 
-	if (dev->switch_power_state == DRM_SWITCH_POWER_OFF ||
-	    dev->switch_power_state == DRM_SWITCH_POWER_DYNAMIC_OFF)
+	if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
 		return 0;
 
 	drm_kms_helper_poll_disable(dev);
@@ -1928,8 +1927,7 @@ int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon)
 	struct drm_crtc *crtc;
 	int r;
 
-	if (dev->switch_power_state == DRM_SWITCH_POWER_OFF ||
-	    dev->switch_power_state == DRM_SWITCH_POWER_DYNAMIC_OFF)
+	if (dev->switch_power_state == DRM_SWITCH_POWER_OFF)
 		return 0;
 
 	if (fbcon)