configs: kirkwood: ds109: switch to DM_I2C

Enable DM_I2C and I2C_MVTSWI for the ds109 board.

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Signed-off-by: Stefan Roese <sr@denx.de>

configs/ds109_defconfig

@@ -18,6 +18,8 @@ CONFIG_ISO_PARTITION=y
 CONFIG_OF_CONTROL=y
 CONFIG_ENV_IS_IN_SPI_FLASH=y
 CONFIG_MVSATA_IDE=y
+CONFIG_DM_I2C=y
+CONFIG_SYS_I2C_MVTWSI=y
 # CONFIG_MMC is not set
 CONFIG_SPI_FLASH=y
 CONFIG_SPI_FLASH_BAR=y