switch sys_mknodat(2) to umode_t

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/namei.c b/fs/namei.c
index 5008f01..f6b3c73 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2489,7 +2489,7 @@
 	}
 }
 
-SYSCALL_DEFINE4(mknodat, int, dfd, const char __user *, filename, int, mode,
+SYSCALL_DEFINE4(mknodat, int, dfd, const char __user *, filename, umode_t, mode,
 		unsigned, dev)
 {
 	struct dentry *dentry;
@@ -2536,7 +2536,7 @@
 	return error;
 }
 
-SYSCALL_DEFINE3(mknod, const char __user *, filename, int, mode, unsigned, dev)
+SYSCALL_DEFINE3(mknod, const char __user *, filename, umode_t, mode, unsigned, dev)
 {
 	return sys_mknodat(AT_FDCWD, filename, mode, dev);
 }