i2c: update config using mxc driver to new subsystem

Signed-off-by: Philippe Reynes <tremyfr@yahoo.fr>
diff --git a/include/configs/mx25pdk.h b/include/configs/mx25pdk.h
index 543c415..256b3c1 100644
--- a/include/configs/mx25pdk.h
+++ b/include/configs/mx25pdk.h
@@ -111,10 +111,9 @@
 
 /* I2C Configs */
 #define CONFIG_CMD_I2C
-#define CONFIG_HARD_I2C
-#define CONFIG_I2C_MXC
-#define CONFIG_SYS_I2C_BASE		IMX_I2C_BASE
-#define CONFIG_SYS_I2C_SPEED		100000
+#define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_MXC
+#define CONFIG_SYS_SPD_BUS_NUM		0 /* I2C1 */
 
 /* RTC */
 #define CONFIG_RTC_IMXDI