ASoC: wcd934x: fix High Accuracy Buck enable

High Accuracy buck is not applicable when we use RCO Band Gap source,
so move it back to correct place.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200306132806.19684-2-srinivas.kandagatla@linaro.org


Signed-off-by: Mark Brown <broonie@kernel.org>