ssb: make ssb_pcmcia_switch_core static

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
diff --git a/drivers/ssb/pcmcia.c b/drivers/ssb/pcmcia.c
index b413e01..f03422b 100644
--- a/drivers/ssb/pcmcia.c
+++ b/drivers/ssb/pcmcia.c
@@ -147,8 +147,7 @@
 	return err;
 }
 
-int ssb_pcmcia_switch_core(struct ssb_bus *bus,
-			   struct ssb_device *dev)
+static int ssb_pcmcia_switch_core(struct ssb_bus *bus, struct ssb_device *dev)
 {
 	int err;