drm/omap: call drm_put_dev directly in ->remove

Again omap already sets the driver data pointer to the drm_device.

Also drop the driver unregister call, that should be (and already is)
done in the module unload hook.

Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/omapdrm/omap_drv.c b/drivers/gpu/drm/omapdrm/omap_drv.c
index e7fa3cd..13f294a 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -665,9 +665,9 @@
 static int pdev_remove(struct platform_device *device)
 {
 	DBG("");
-	drm_platform_exit(&omap_drm_driver, device);
 
-	platform_driver_unregister(&omap_dmm_driver);
+	drm_put_dev(platform_get_drvdata(device));
+
 	return 0;
 }