gma500: Only fiddle with clock gating on PSB

Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/gma500/psb_powermgmt.c

@@ -64,7 +64,7 @@ void gma_power_init(struct drm_device *dev)
 	dev_priv->suspended = false;	/* And not suspended */
 	mutex_init(&power_mutex);
 
-	if (!IS_MRST(dev)) {
+	if (!IS_MRST(dev) && !IS_MFLD(dev)) {
 		/* FIXME: wants further review */
 		u32 gating = PSB_RSGX32(PSB_CR_CLKGATECTL);
 		/* Disable 2D clock gating */