cmd: i2c: Fix use sdram sub command with CONFIG_DM_I2C

sdram sub command of i2c command does not support Drivers Model.
This adds Drivers Model support to sdram sub command.

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Heiko Schocher <hs@denx.de>
1 file changed