nls: have register_nls() set ->owner

pass owner explicitly to __register_nls(), make register_nls() a macro passing
THIS_MODULE as the owner argument to __register_nls().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/nls/mac-romanian.c

@@ -583,7 +583,6 @@ static struct nls_table table = {
 	.char2uni	= char2uni,
 	.charset2lower	= charset2lower,
 	.charset2upper	= charset2upper,
-	.owner		= THIS_MODULE,
 };
 
 static int __init init_nls_macromanian(void)