[klibc] include: [ppc64/klibc/archstat.h] get rid of  nlink_t use

It is a unsigned long on ppc64, see
0fd7bee1e9b68fd271ad87c3e705facd1ca38055 in linux.

Signed-off-by: maximilian attems <max@stro.at>
diff --git a/usr/include/arch/ppc64/klibc/archstat.h b/usr/include/arch/ppc64/klibc/archstat.h
index 491316c..918d810 100644
--- a/usr/include/arch/ppc64/klibc/archstat.h
+++ b/usr/include/arch/ppc64/klibc/archstat.h
@@ -8,7 +8,7 @@
 struct stat {
 	__stdev64	(st_dev);
 	ino_t		st_ino;
-	nlink_t		st_nlink;
+	unsigned long	st_nlink;
 	mode_t		st_mode;
 	uid_t 		st_uid;
 	gid_t 		st_gid;