Configure the i2c pins as GPIO outputs and use the i2c-gpio driver to
control the Semtech SX9512 touch controller.
This fixes spurious errors in i2c transactions even at 1kHz with the
native i2c driver.
leds green:wan: Setting an LED's brightness failed (-6)
Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit f828be4d10d795e2bd74ea77ea12dec285107974)
6adcb5d75c