apalis_imx6: migrate i2c to using driver model

Migrate I2C to using driver model.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
diff --git a/configs/apalis_imx6_defconfig b/configs/apalis_imx6_defconfig
index 0763b1d..60c4d97 100644
--- a/configs/apalis_imx6_defconfig
+++ b/configs/apalis_imx6_defconfig
@@ -52,6 +52,7 @@
 CONFIG_DWC_AHSATA=y
 CONFIG_DFU_MMC=y
 CONFIG_DM_GPIO=y
+CONFIG_DM_I2C=y
 CONFIG_FSL_ESDHC=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MICREL=y