ssb: make ssb_sdio_switch_core static

It's used locally only.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
diff --git a/drivers/ssb/sdio.c b/drivers/ssb/sdio.c
index b2d36f7..2278e43 100644
--- a/drivers/ssb/sdio.c
+++ b/drivers/ssb/sdio.c
@@ -200,7 +200,7 @@
 }
 
 /* host must be already claimed */
-int ssb_sdio_switch_core(struct ssb_bus *bus, struct ssb_device *dev)
+static int ssb_sdio_switch_core(struct ssb_bus *bus, struct ssb_device *dev)
 {
 	u8 coreidx = dev->core_index;
 	u32 sbaddr;
diff --git a/drivers/ssb/ssb_private.h b/drivers/ssb/ssb_private.h
index eb507a5..1d2256e 100644
--- a/drivers/ssb/ssb_private.h
+++ b/drivers/ssb/ssb_private.h
@@ -132,7 +132,6 @@
 				     struct ssb_init_invariants *iv);
 
 extern u32 ssb_sdio_scan_read32(struct ssb_bus *bus, u16 offset);
-extern int ssb_sdio_switch_core(struct ssb_bus *bus, struct ssb_device *dev);
 extern int ssb_sdio_scan_switch_coreidx(struct ssb_bus *bus, u8 coreidx);
 extern int ssb_sdio_hardware_setup(struct ssb_bus *bus);
 extern void ssb_sdio_exit(struct ssb_bus *bus);
@@ -144,11 +143,6 @@
 {
 	return 0;
 }
-static inline int ssb_sdio_switch_core(struct ssb_bus *bus,
-					 struct ssb_device *dev)
-{
-	return 0;
-}
 static inline int ssb_sdio_scan_switch_coreidx(struct ssb_bus *bus, u8 coreidx)
 {
 	return 0;