gma500: lid_state should be __iomem

This was mostly already fixed but this one change is needed to match Kirill's
original submission

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/gma500/opregion.c

@@ -302,7 +302,7 @@ int psb_intel_opregion_setup(struct drm_device *dev)
 	struct drm_psb_private *dev_priv = dev->dev_private;
 	struct psb_intel_opregion *opregion = &dev_priv->opregion;
 	u32 opregion_phy, mboxes;
-	void *base;
+	void __iomem *base;
 	int err = 0;
 
 	pci_read_config_dword(dev->pdev, PCI_ASLS, &opregion_phy);