avr32: fixup definitions to ATMEL_BASE_xxx

Signed-off-by: Andreas Bießmann <biessmann@corscience.de>
diff --git a/arch/avr32/include/asm/arch-at32ap700x/gpio.h b/arch/avr32/include/asm/arch-at32ap700x/gpio.h
index b0254f2..4322eac 100644
--- a/arch/avr32/include/asm/arch-at32ap700x/gpio.h
+++ b/arch/avr32/include/asm/arch-at32ap700x/gpio.h
@@ -45,15 +45,15 @@
 {
 	switch (pin >> 5) {
 	case 0:
-		return (void *)PIOA_BASE;
+		return (void *)ATMEL_BASE_PIOA;
 	case 1:
-		return (void *)PIOB_BASE;
+		return (void *)ATMEL_BASE_PIOB;
 	case 2:
-		return (void *)PIOC_BASE;
+		return (void *)ATMEL_BASE_PIOC;
 	case 3:
-		return (void *)PIOD_BASE;
+		return (void *)ATMEL_BASE_PIOD;
 	case 4:
-		return (void *)PIOE_BASE;
+		return (void *)ATMEL_BASE_PIOE;
 	default:
 		return NULL;
 	}