staging/omapdrm: Fix spacing coding style in omap_gem_helper.c

The following error fixed.
- ERROR: "foo ** bar" should be "foo **bar"
Signed-off-by: YAMANE Toshiaki <yamanetoshi@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/omapdrm/omap_gem_helpers.c

@@ -32,7 +32,7 @@
  * @obj: obj in question
  * @gfpmask: gfp mask of requested pages
  */
-struct page ** _drm_gem_get_pages(struct drm_gem_object *obj, gfp_t gfpmask)
+struct page **_drm_gem_get_pages(struct drm_gem_object *obj, gfp_t gfpmask)
 {
 	struct inode *inode;
 	struct address_space *mapping;