drivers/net/wireless/b43/main.c needs io.h

m68k:

drivers/net/wireless/b43/main.c:251: error: implicit declaration of function 'mmiowb'

Cc: "John W. Linville" <linville@tuxdriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/net/wireless/b43/main.c

@@ -38,6 +38,7 @@
 #include <linux/wireless.h>
 #include <linux/workqueue.h>
 #include <linux/skbuff.h>
+#include <linux/io.h>
 #include <linux/dma-mapping.h>
 #include <asm/unaligned.h>