switch device_get_devnode() and ->devnode() to umode_t *

both callers of device_get_devnode() are only interested in lower 16bits
and nobody tries to return anything wider than 16bit anyway.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index 29f9000..f5db8b9 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -715,7 +715,7 @@
 }
 
 /* class for /sys/class/rc */
-static char *ir_devnode(struct device *dev, mode_t *mode)
+static char *ir_devnode(struct device *dev, umode_t *mode)
 {
 	return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev));
 }