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>

arch/um/os-Linux/drivers/tuntap_user.c

@@ -13,8 +13,8 @@
 #include <sys/socket.h>
 #include <sys/wait.h>
 #include <sys/uio.h>
-#include "kern_util.h"
-#include "os.h"
+#include <kern_util.h>
+#include <os.h>
 #include "tuntap.h"
 
 static int tuntap_user_init(void *data, void *dev)