ARM: atmel: add sama5d3xek support

Add sama5d3xek support with following feature
  - boot from NAND flash, PMECC support, 4bit ECC @ 512 bytes sector
  - boot from SPI flash support
  - boot from SD card support
  - LCD support
  - EMAC support
  - USB OHCI support

Signed-off-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
diff --git a/arch/arm/include/asm/arch-at91/at91_dbu.h b/arch/arm/include/asm/arch-at91/at91_dbu.h
index 3429293..9a640a5 100644
--- a/arch/arm/include/asm/arch-at91/at91_dbu.h
+++ b/arch/arm/include/asm/arch-at91/at91_dbu.h
@@ -38,4 +38,8 @@
 #define AT91_DBU_CID_ARCH_9xx		0x01900000
 #define AT91_DBU_CID_ARCH_9XExx	0x02900000
 
+#define AT91_DBU_CIDR_MASK		0x1f
+#define AT91_DBU_CIDR			0x40
+#define AT91_DBU_EXID			0x44
+
 #endif