gpio: pca953x: Add optional reset gpio control

Add optional reset-gpios pin control. If present, de-assert the
specified reset gpio pin to bring the chip out of reset.

v2:
- Specify that reset signal to PCA953x chip is active low, in
  binding doc.
- reorder includes in gpio-pca953x.c.
- remove dev_err() on devm_gpiod_get_optional() error return.

Cc: Alexandre Courbot <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Steve Longerbeam <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Reviewed-by: Vladimir Zapolskiy <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>

0 files changed, 0 insertions, 0 deletions