arm: at91: Change the Chip ID registers' addresses

Provide the specific addresses for the Chip ID and Chip ID Extension
registers, instead of the offset, which make it use on other chips.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Andreas Bießmann <andreas.devel@googlemail.com>
diff --git a/arch/arm/mach-at91/include/mach/sama5d4.h b/arch/arm/mach-at91/include/mach/sama5d4.h
index 7773ace..3da8aff 100644
--- a/arch/arm/mach-at91/include/mach/sama5d4.h
+++ b/arch/arm/mach-at91/include/mach/sama5d4.h
@@ -144,6 +144,9 @@
 #define ATMEL_BASE_PIOE		0xfc06d000
 #define ATMEL_BASE_AIC		0xfc06e000
 
+#define ATMEL_CHIPID_CIDR	0xfc069040
+#define ATMEL_CHIPID_EXID	0xfc069044
+
 /*
  * Internal Memory.
  */