siemens draco: i2c: use driver model for u-boot

Add support for driver model where EEPROM data are read in draco board.

Reviewed-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Signed-off-by: Enrico Leto <enrico.leto@siemens.com>
diff --git a/configs/draco-rastaban_defconfig b/configs/draco-rastaban_defconfig
index f4a9b86..03fbe49 100644
--- a/configs/draco-rastaban_defconfig
+++ b/configs/draco-rastaban_defconfig
@@ -84,8 +84,10 @@
 CONFIG_CLK_TI_CTRL=y
 CONFIG_DFU_NAND=y
 CONFIG_SYS_DFU_DATA_BUF_SIZE=0x100000
-CONFIG_SYS_I2C_LEGACY=y
+CONFIG_DM_I2C=y
+# CONFIG_SPL_DM_I2C is not set
 CONFIG_SPL_SYS_I2C_LEGACY=y
+CONFIG_I2C_SET_DEFAULT_BUS_NUM=y
 # CONFIG_MMC is not set
 CONFIG_MTD=y
 CONFIG_MTD_RAW_NAND=y