gma500: fixup build versus latest header changes.

Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/gma500/intel_i2c.c b/drivers/gpu/drm/gma500/intel_i2c.c
index e33432d..98a28c2 100644
--- a/drivers/gpu/drm/gma500/intel_i2c.c
+++ b/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>