atheros: Fix compilation

With our recent switch to the 3.3 kernel target, some headers were
occidentally omitted.

Signed-off-by: Jonathan Bither <jonbither@gmail.com>

SVN-Revision: 31640

target/linux/atheros/patches-3.3/100-board.patch

@@ -2884,10 +2884,13 @@
 +#endif
 --- /dev/null
 +++ b/arch/mips/include/asm/mach-ar231x/ar231x.h
-@@ -0,0 +1,54 @@
+@@ -0,0 +1,57 @@
 +#ifndef __AR531X_H
 +#define __AR531X_H
 +
++#include <linux/types.h>
++#include <linux/io.h>
++
 +#define AR531X_MISC_IRQ_BASE		0x20
 +#define AR531X_GPIO_IRQ_BASE		0x30
 +