ssb bus needs <linux/io.h>

ssb bus needs <linux/io.h>

  linux/drivers/ssb/main.c: In function 'ssb_ssb_read16':
  linux/drivers/ssb/main.c:518: error: implicit declaration of function 'readw'
  linux/drivers/ssb/main.c: In function 'ssb_ssb_read32':
  linux/drivers/ssb/main.c:526: error: implicit declaration of function 'readl'
  linux/drivers/ssb/main.c: In function 'ssb_ssb_write16':
  linux/drivers/ssb/main.c:534: error: implicit declaration of function 'writew'
  linux/drivers/ssb/main.c: In function 'ssb_ssb_write32':
  linux/drivers/ssb/main.c:542: error: implicit declaration of function 'writel'

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/ssb/main.c

@@ -11,6 +11,7 @@
 #include "ssb_private.h"
 
 #include <linux/delay.h>
+#include <linux/io.h>
 #include <linux/ssb/ssb.h>
 #include <linux/ssb/ssb_regs.h>
 #include <linux/dma-mapping.h>