ASoC: ak4613: Simplify probe()

Simpilfy probe() by replacing of_device_get_match_data() and id lookup for
retrieving match data by i2c_get_match_data().

While at it, drop unused local variable np from probe().

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20230813073458.59606-1-biju.das.jz@bp.renesas.com


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