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