i2c: update config using mxc driver to new subsystem

Signed-off-by: Philippe Reynes <tremyfr@yahoo.fr>
diff --git a/include/configs/imx31_phycore.h b/include/configs/imx31_phycore.h
index 1e2b12c..6b99d1b 100644
--- a/include/configs/imx31_phycore.h
+++ b/include/configs/imx31_phycore.h
@@ -35,11 +35,10 @@
  * Hardware drivers
  */
 
-#define CONFIG_HARD_I2C
-#define CONFIG_I2C_MXC
-#define CONFIG_SYS_I2C_BASE		I2C2_BASE_ADDR
+#define CONFIG_SYS_I2C
+#define CONFIG_SYS_I2C_MXC
+#define CONFIG_SYS_SPD_BUS_NUM		1 /* I2C2 */
 #define CONFIG_SYS_I2C_CLK_OFFSET	I2C2_CLK_OFFSET
-#define CONFIG_SYS_I2C_SPEED		100000
 
 #define CONFIG_MXC_UART
 #define CONFIG_MXC_UART_BASE		UART1_BASE