Use the "cansleep" variant of gpiod_set_value so the driver can be used
with slow gpio controllers as well.

Fixes: 85825d5e ("ASoC: dio2125: add dio2125 amp driver")
Reported-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>