ASoC: jack: update calls to gpiod_get*()

Add the new flags argument to calls of (devm_)gpiod_get*() and
remove any direction setting code afterwards.

Currently both forms (with or without the flags argument)
are valid thanks to transitional macros in
<linux/gpio/consumer.h>. These macros will be removed once
all consumers are updated and the flags argument will become
compulsary.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>