ASoC: adau7118: don't disable regulators on device unbind

ASoC: adau7118: don't disable regulators on device unbind

[ Upstream commit 3bbde314064002e39cc54662c96593cde2187125 ]

The regulators are supposed to be controlled through the
set_bias_level() component callback. Moreover, the regulators are not
enabled during probe and so, this would lead to a regulator unbalanced
use count.

Fixes: 1d9a84e4aa4dc ("ASOC: Add ADAU7118 8 Channel PDM-to-I2S/TDM Converter driver")
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20230224104551.1139981-1-nuno.sa@analog.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>