avr32: asm/io.h needs asm/types.h

map_physmem() takes a phys_addr_t as parameter. This type is defined in
asm/types.h, so we need to include that file.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
diff --git a/include/asm-avr32/io.h b/include/asm-avr32/io.h
index d030c26..06e52b1 100644
--- a/include/asm-avr32/io.h
+++ b/include/asm-avr32/io.h
@@ -22,6 +22,8 @@
 #ifndef __ASM_AVR32_IO_H
 #define __ASM_AVR32_IO_H
 
+#include <asm/types.h>
+
 #ifdef __KERNEL__
 
 /*