ASoC: es8316: Don't use ranges based register lookup for a single register

The es8316 driver uses a register range to specify the single volatile
register it has. While the cost will be in the noise this is a bunch of
overhead compared to just having a volatile_reg() callback so switch to
the callback.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230419-asoc-es8316-volatile-v1-1-2074ec93d8f1@kernel.org


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