ASoC: adav80x: Add module device table for adav801

This driver can be built as module, thus add module device table for adav801 to
support module auto loading.

To make the naming consistent, also rename adav80x_id to adav80x_i2c_id.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>