drm: omapdrm: Clean up #include's

Use the <...> include style instead of "..." for DRM headers and sort
the headers alphabetically to ease detection of duplicates.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
diff --git a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
index 344fd78..0cc71c9 100644
--- a/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
+++ b/drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c
@@ -17,10 +17,10 @@
  * this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "omap_drv.h"
-
 #include <linux/dma-buf.h>
 
+#include "omap_drv.h"
+
 static struct sg_table *omap_gem_map_dma_buf(
 		struct dma_buf_attachment *attachment,
 		enum dma_data_direction dir)