um: get rid of pointless include "..." where include <...> will do

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
diff --git a/arch/um/drivers/chan_user.h b/arch/um/drivers/chan_user.h
index 6257b7a..dc693298 100644
--- a/arch/um/drivers/chan_user.h
+++ b/arch/um/drivers/chan_user.h
@@ -6,7 +6,7 @@
 #ifndef __CHAN_USER_H__
 #define __CHAN_USER_H__
 
-#include "init.h"
+#include <init.h>
 
 struct chan_opts {
 	void (*const announce)(char *dev_name, int dev);