staging: agnx: drivers/staging/agnx/agnx.h needs <linux/io.h>

On m68k:
drivers/staging/agnx/agnx.h: In function 'agnx_read32':
drivers/staging/agnx/agnx.h:10: error: implicit declaration of function 'ioread32'
drivers/staging/agnx/agnx.h: In function 'agnx_write32':
drivers/staging/agnx/agnx.h:15: error: implicit declaration of function 'iowrite32'
drivers/staging/agnx/sta.c: In function 'get_sta_power':
drivers/staging/agnx/sta.c:94: error: implicit declaration of function 'memcpy_fromio'
drivers/staging/agnx/sta.c: In function 'set_sta_power':
drivers/staging/agnx/sta.c:103: error: implicit declaration of function 'memcpy_toio'

Signed-off-by: Geert Uytterhoeven <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/agnx/agnx.h

···
 #ifndef AGNX_H_
 #define AGNX_H_
 
+#include <linux/io.h>
+
 #include "xmit.h"
 
 #define PFX				KBUILD_MODNAME ": "