gpio: Add ACCES 104-IDIO-16 driver maintainer entry

Add William Breathitt Gray as the maintainer of the ACCES 104-IDIO-16
GPIO driver.

Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
1 file changed