arm, at91: add missing ddr2 cr register MPDDRC_CR_EBISHARE define

Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-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/atmel_mpddrc.h b/arch/arm/include/asm/arch-at91/atmel_mpddrc.h
index 5741f6e..130a85a 100644
--- a/arch/arm/include/asm/arch-at91/atmel_mpddrc.h
+++ b/arch/arm/include/asm/arch-at91/atmel_mpddrc.h
@@ -57,6 +57,7 @@
 #define ATMEL_MPDDRC_CR_DIC_DS			(0x1 << 8)
 #define ATMEL_MPDDRC_CR_DIS_DLL			(0x1 << 9)
 #define ATMEL_MPDDRC_CR_OCD_DEFAULT		(0x7 << 12)
+#define ATMEL_MPDDRC_CR_DQMS_SHARED		(0x1 << 16)
 #define ATMEL_MPDDRC_CR_ENRDM_ON		(0x1 << 17)
 #define ATMEL_MPDDRC_CR_NB_8BANKS		(0x1 << 20)
 #define ATMEL_MPDDRC_CR_NDQS_DISABLED		(0x1 << 21)