b43 wireless needs <linux/io.h>

b43 wireless needs <linux/io.h>

  linux/drivers/net/wireless/b43/pio.h: In function 'b43_pio_write':
  linux/drivers/net/wireless/b43/pio.h:89: error: implicit declaration of function 'mmiowb'

  linux/drivers/net/wireless/b43/phy.c: In function 'b43_phy_write':
  linux/drivers/net/wireless/b43/phy.c:301: error: implicit declaration of function 'mmiowb'

  linuxdrivers/net/wireless/b43/sysfs.c: In function 'b43_attr_interfmode_store':
  linuxdrivers/net/wireless/b43/sysfs.c:147: error: implicit declaration of function 'mmiowb'

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/net/wireless/b43/sysfs.c b/drivers/net/wireless/b43/sysfs.c
index fcb7773..f4faff6 100644
--- a/drivers/net/wireless/b43/sysfs.c
+++ b/drivers/net/wireless/b43/sysfs.c
@@ -23,13 +23,14 @@
 
 */
 
+#include <linux/capability.h>
+#include <linux/io.h>
+
 #include "b43.h"
 #include "sysfs.h"
 #include "main.h"
 #include "phy.h"
 
-#include <linux/capability.h>
-
 #define GENERIC_FILESIZE	64
 
 static int get_integer(const char *buf, size_t count)