avr32: Use <mach/foo.h> instead of <asm/arch/foo.h>

Update all avr32-specific files to use the new platform-specific header
locations. Drivers shared with ARM are left alone for now.

Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
diff --git a/arch/avr32/include/asm/gpio.h b/arch/avr32/include/asm/gpio.h
index 19e8ccc..b771f71 100644
--- a/arch/avr32/include/asm/gpio.h
+++ b/arch/avr32/include/asm/gpio.h
@@ -1,6 +1,6 @@
 #ifndef __ASM_AVR32_GPIO_H
 #define __ASM_AVR32_GPIO_H
 
-#include <asm/arch/gpio.h>
+#include <mach/gpio.h>
 
 #endif /* __ASM_AVR32_GPIO_H */