gma500: fixup build versus latest header changes.

Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/gma500/intel_i2c.c

@@ -17,7 +17,7 @@
  * Authors:
  *	Eric Anholt <eric@anholt.net>
  */
-
+#include <linux/export.h>
 #include <linux/i2c.h>
 #include <linux/i2c-algo-bit.h>
 

drivers/gpu/drm/gma500/oaktrail_hdmi_i2c.c

@@ -24,6 +24,7 @@
  *	Li Peng <peng.li@intel.com>
  */
 
+#include <linux/export.h>
 #include <linux/mutex.h>
 #include <linux/pci.h>
 #include <linux/i2c.h>

drivers/gpu/drm/gma500/psb_drv.c

@@ -35,6 +35,7 @@
 #include <linux/spinlock.h>
 #include <linux/pm_runtime.h>
 #include <acpi/video.h>
+#include <linux/module.h>
 
 static int drm_psb_trap_pagefaults;