vf610: Add I2C support for Vybrid VF610 platform

This patch adds I2C support for Vybrid VF610 platform and adds
I2C0 support to VF610TWR board.

Signed-off-by: Alison Wang <b18965@freescale.com>
diff --git a/include/configs/vf610twr.h b/include/configs/vf610twr.h
index 5012fc8..9aba5bc 100644
--- a/include/configs/vf610twr.h
+++ b/include/configs/vf610twr.h
@@ -81,6 +81,13 @@
 #define CONFIG_PHYLIB
 #define CONFIG_PHY_MICREL
 
+/* I2C Configs */
+#define CONFIG_CMD_I2C
+#define CONFIG_HARD_I2C
+#define CONFIG_I2C_MXC
+#define CONFIG_SYS_I2C_BASE		I2C0_BASE_ADDR
+#define CONFIG_SYS_I2C_SPEED		100000
+
 #define CONFIG_BOOTDELAY		3
 
 #define CONFIG_LOADADDR			0x82000000