biosemu: include <asm/io.h> header

This makes sure we have inline functions such as inb/outb that
are used in these two files by including the arch-specific
<asm/io.h> header. However the ARM version does not provide the
accessors unless the config symbol __io is also defined so add
that in front of the include.

After this the bios emulator will compile on ARM systems.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/bios_emulator/besys.c

@@ -47,6 +47,8 @@
 *
 ****************************************************************************/
 
+#define __io
+#include <asm/io.h>
 #include <common.h>
 #include "biosemui.h"
 

drivers/bios_emulator/bios.c

@@ -41,6 +41,8 @@
 *
 ****************************************************************************/
 
+#define __io
+#include <asm/io.h>
 #include <common.h>
 #include "biosemui.h"