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

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
index 01be355..67f8446 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
@@ -412,7 +412,7 @@ int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
  * Wrapper around the drm_poll function that makes sure the device is
  * processing the fifo if drm_poll decides to wait.
  */
-unsigned int vmw_fops_poll(struct file *filp, struct poll_table_struct *wait)
+__poll_t vmw_fops_poll(struct file *filp, struct poll_table_struct *wait)
 {
 	struct drm_file *file_priv = filp->private_data;
 	struct vmw_private *dev_priv =