board: sl50: convert to DM_I2C

Conversion to DM_I2C is mandatory, enable DM_I2C
to disable board removal warning.

Signed-off-by: Anatolij Gustschin <agust@denx.de>
diff --git a/configs/am335x_sl50_defconfig b/configs/am335x_sl50_defconfig
index 894a59f..7444e55 100644
--- a/configs/am335x_sl50_defconfig
+++ b/configs/am335x_sl50_defconfig
@@ -65,7 +65,7 @@
 CONFIG_BOOTP_SEND_HOSTNAME=y
 CONFIG_BOOTCOUNT_LIMIT=y
 CONFIG_SYS_BOOTCOUNT_BE=y
-CONFIG_SYS_I2C_LEGACY=y
+CONFIG_DM_I2C=y
 CONFIG_SPL_SYS_I2C_LEGACY=y
 CONFIG_SYS_I2C_EEPROM_ADDR=0x50
 CONFIG_MMC_OMAP_HS=y