ASoC: ak4642: Minor cleanups in probe()

Some minor cleanups:
 Replace local variable np with dev_fwnode()
 Replace dev_err()->dev_err_probe().
 Remove comma in the terminator entry for OF table.
 Drop a space in the terminator entry for ID table.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20230831204734.104954-2-biju.das.jz@bp.renesas.com


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