exynos5: enable dm i2c

This patch enables CONFIG_DM_I2C and also CONFIG_DM_I2C_COMPAT.
The last one should be removed when all the i2c peripheral
drivers will use dm i2c framework.

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Cc: Akshay Saraswat <akshay.s@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Simon Glass <sjg@chromium.org>

include/configs/exynos5-common.h

@@ -126,12 +126,11 @@
 #define SPI_FLASH_UBOOT_POS	(CONFIG_SEC_FW_SIZE + CONFIG_BL1_SIZE)
 
 /* I2C */
-#define CONFIG_SYS_I2C_INIT_BOARD
-#define CONFIG_SYS_I2C
+#define CONFIG_DM_I2C
+#define CONFIG_DM_I2C_COMPAT
 #define CONFIG_CMD_I2C
-#define CONFIG_SYS_I2C_S3C24X0_SPEED	100000		/* 100 Kbps */
 #define CONFIG_SYS_I2C_S3C24X0
-#define CONFIG_I2C_MULTI_BUS
+#define CONFIG_SYS_I2C_S3C24X0_SPEED	100000		/* 100 Kbps */
 #define CONFIG_SYS_I2C_S3C24X0_SLAVE    0x0
 #define CONFIG_I2C_EDID