drm: cleanup DRM_DEBUG() parameters

As DRM_DEBUG macro already prints out the __FUNCTION__ string (see
drivers/char/drm/drmP.h), it is not worth doing this again. At some
other places the ending "\n" was added.

airlied:- I cleaned up a few that this patch missed also

Signed-off-by: Dave Airlie <airlied@linux.ie>
diff --git a/drivers/char/drm/drm_irq.c b/drivers/char/drm/drm_irq.c
index 05eae63..089c015 100644
--- a/drivers/char/drm/drm_irq.c
+++ b/drivers/char/drm/drm_irq.c
@@ -107,7 +107,7 @@
 	dev->irq_enabled = 1;
 	mutex_unlock(&dev->struct_mutex);
 
-	DRM_DEBUG("%s: irq=%d\n", __FUNCTION__, dev->irq);
+	DRM_DEBUG("irq=%d\n", dev->irq);
 
 	if (drm_core_check_feature(dev, DRIVER_IRQ_VBL)) {
 		init_waitqueue_head(&dev->vbl_queue);
@@ -164,7 +164,7 @@
 	if (!irq_enabled)
 		return -EINVAL;
 
-	DRM_DEBUG("%s: irq=%d\n", __FUNCTION__, dev->irq);
+	DRM_DEBUG("irq=%d\n", dev->irq);
 
 	dev->driver->irq_uninstall(dev);