[S390] sys_personality: follow u_long to unsigned int conversion

commit 485d527686850d68a0e9006dd9904f19f122485e "sys_personality: change
sys_personality() to accept "unsigned int" instead of u_long" changed
the syscall interface for sys_personality.
Just follow the common code change in our arch code to avoid confusion.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c
index 7b6b0f8..4760814 100644
--- a/arch/s390/kernel/sys_s390.c
+++ b/arch/s390/kernel/sys_s390.c
@@ -131,9 +131,9 @@
 }
 
 #ifdef CONFIG_64BIT
-SYSCALL_DEFINE1(s390_personality, unsigned long, personality)
+SYSCALL_DEFINE1(s390_personality, unsigned int, personality)
 {
-	int ret;
+	unsigned int ret;
 
 	if (current->personality == PER_LINUX32 && personality == PER_LINUX)
 		personality = PER_LINUX32;