cm_t335: add support for pca9555 i2c gpio extender

Add support for the 16 bits pca9555 i2c to gpio extender featured
by the SB-T335 baseboard.

Signed-off-by: Ilya Ledvich <ilya@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
1 file changed