the rest of drivers/*: annotate ->poll() instances

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/drm/drm_file.h b/include/drm/drm_file.h
index 0e0c868..5176c37 100644
--- a/include/drm/drm_file.h
+++ b/include/drm/drm_file.h
@@ -364,7 +364,7 @@ int drm_open(struct inode *inode, struct file *filp);
 ssize_t drm_read(struct file *filp, char __user *buffer,
 		 size_t count, loff_t *offset);
 int drm_release(struct inode *inode, struct file *filp);
-unsigned int drm_poll(struct file *filp, struct poll_table_struct *wait);
+__poll_t drm_poll(struct file *filp, struct poll_table_struct *wait);
 int drm_event_reserve_init_locked(struct drm_device *dev,
 				  struct drm_file *file_priv,
 				  struct drm_pending_event *p,