The downstream ChromeOS 3.8 kernel sets the clock frequency
for the I2C bus 7 at 400kHz. Do the same change in mainline.
Suggested-by: NDoug Anderson <dianders@chromium.org>
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: NDoug Anderson <dianders@chromium.org>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>