drm/omap: kill firstopen callback

KMS drivers really shouldn't need to do anything on firstopen, so kill
empty callbacks.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Rob Clark <robdclark@gmail.com>
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 2f9e22e..47e64f9 100644
--- a/drivers/gpu/drm/omapdrm/omap_drv.c
+++ b/drivers/gpu/drm/omapdrm/omap_drv.c
@@ -524,12 +524,6 @@
 	return 0;
 }
 
-static int dev_firstopen(struct drm_device *dev)
-{
-	DBG("firstopen: dev=%p", dev);
-	return 0;
-}
-
 /**
  * lastclose - clean up after all DRM clients have exited
  * @dev: DRM device
@@ -609,7 +603,6 @@
 		.load = dev_load,
 		.unload = dev_unload,
 		.open = dev_open,
-		.firstopen = dev_firstopen,
 		.lastclose = dev_lastclose,
 		.preclose = dev_preclose,
 		.postclose = dev_postclose,