[PATCH -next] powerpc/powernv: make symbol 'mpipl_kobj' static

The sparse tool complains as follows:

arch/powerpc/platforms/powernv/opal-core.c:74:16: warning:
 symbol 'mpipl_kobj' was not declared.

This symbol is not used outside of opal-core.c, so marks it static.

Reported-by: Hulk Robot <redacted>
Signed-off-by: Bixuan Cui <redacted>
---
 arch/powerpc/platforms/powernv/opal-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/powernv/opal-core.c b/arch/powerpc/platforms/powernv/opal-core.c
index 0d9ba70f7251..5b9736bbc2aa 100644
--- a/arch/powerpc/platforms/powernv/opal-core.c
+++ b/arch/powerpc/platforms/powernv/opal-core.c

@@ -71,7 +71,7 @@ static LIST_HEAD(opalcore_list);
 static struct opalcore_config *oc_conf;
 static const struct opal_mpipl_fadump *opalc_metadata;
 static const struct opal_mpipl_fadump *opalc_cpu_metadata;
-struct kobject *mpipl_kobj;
+static struct kobject *mpipl_kobj;
 
 /*
  * Set crashing CPU's signal to SIGUSR1. if the kernel is triggered