gpio: pca953x: Add support for the TI TCA9539

The TI TCA9539 is a variant of the PCA953x GPIO expander,
with 16 GPIOs and interrupt functionality.

Signed-off-by: Peter Robinson <pbrobinson@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Peter Robinson 2019-06-01 08:12:18 +01:00 • committed by Linus Walleij
commit 8b74ae41f1