drm/omap: Replace drm_dev_unref with drm_dev_put

This patch unifies the naming of DRM functions for reference counting
of struct drm_device. The resulting code is more aligned with the rest
of the Linux kernel interfaces.
Signed-off-by: Thomas Zimmermann <tdz@users.sourceforge.net>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

drivers/gpu/drm/omapdrm/omap_drv.c

@@ -614,7 +614,7 @@ static int omapdrm_init(struct omap_drm_private *priv, struct device *dev)
 	omap_disconnect_pipelines(ddev);
 err_crtc_uninit:
 	omap_crtc_pre_uninit(priv);
-	drm_dev_unref(ddev);
+	drm_dev_put(ddev);
 	return ret;
 }
 
@@ -643,7 +643,7 @@ static void omapdrm_cleanup(struct omap_drm_private *priv)
 	omap_disconnect_pipelines(ddev);
 	omap_crtc_pre_uninit(priv);
 
-	drm_dev_unref(ddev);
+	drm_dev_put(ddev);
 }
 
 static int pdev_probe(struct platform_device *pdev)