powerpc/pseries: Export rtas_ibm_suspend_me()

Export the rtas_ibm_suspend_me() routine.  This is needed to perform
partition migration in the kernel.
Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

arch/powerpc/include/asm/rtas.h

@@ -187,6 +187,7 @@ extern void rtas_progress(char *s, unsigned short hex);
 extern void rtas_initialize(void);
 extern int rtas_suspend_cpu(struct rtas_suspend_me_data *data);
 extern int rtas_suspend_last_cpu(struct rtas_suspend_me_data *data);
+extern int rtas_ibm_suspend_me(struct rtas_args *);
 
 struct rtc_time;
 extern unsigned long rtas_get_boot_time(void);

arch/powerpc/kernel/rtas.c

@@ -805,7 +805,7 @@ static void rtas_percpu_suspend_me(void *info)
 	__rtas_suspend_cpu((struct rtas_suspend_me_data *)info, 1);
 }
 
-static int rtas_ibm_suspend_me(struct rtas_args *args)
+int rtas_ibm_suspend_me(struct rtas_args *args)
 {
 	long state;
 	long rc;
@@ -855,7 +855,7 @@ static int rtas_ibm_suspend_me(struct rtas_args *args)
 	return atomic_read(&data.error);
 }
 #else /* CONFIG_PPC_PSERIES */
-static int rtas_ibm_suspend_me(struct rtas_args *args)
+int rtas_ibm_suspend_me(struct rtas_args *args)
 {
 	return -ENOSYS;
 }