i2c: update config using mxc driver to new subsystem

Signed-off-by: Philippe Reynes <tremyfr@yahoo.fr>
diff --git a/include/configs/mx53evk.h b/include/configs/mx53evk.h
index fe5cf3c..d9c7df5 100644
--- a/include/configs/mx53evk.h
+++ b/include/configs/mx53evk.h
@@ -37,10 +37,9 @@
 
 /* I2C Configs */
 #define CONFIG_CMD_I2C
-#define CONFIG_HARD_I2C
-#define CONFIG_I2C_MXC
-#define CONFIG_SYS_I2C_BASE		I2C2_BASE_ADDR
-#define CONFIG_SYS_I2C_SPEED            100000
+#define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_MXC
+#define CONFIG_SYS_SPD_BUS_NUM		1 /* I2C2 */
 
 /* PMIC Configs */
 #define CONFIG_POWER