sched: add exported arch_reinit_sched_domains() to header file.

Needed so it can be called from outside of sched.c.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/kernel/sched.c b/kernel/sched.c
index 573179e..78482e5 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -6920,7 +6920,7 @@
 }
 
 #if defined(CONFIG_SCHED_MC) || defined(CONFIG_SCHED_SMT)
-static int arch_reinit_sched_domains(void)
+int arch_reinit_sched_domains(void)
 {
 	int err;