ASoC: codecs: Drop explicit initialization of struct i2c_device_id::driver_data to 0

These drivers don't use the driver_data member of struct i2c_device_id,
so don't explicitly initialize this member.

This prepares putting driver_data in an anonymous union which requires
either no initialization or named designators. But it's also a nice
cleanup on its own.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20240502074722.1103986-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: nau8325: Revise soc_enum structure definition.

This patch is modified nau8325_dac_oversampl_enum enumerated.
Use SOC_VALUE_ENUM instead to hide empty (presumably invalid) options.

Signed-off-by: Seven Lee <wtli@nuvoton.com>
Link: https://msgid.link/r/20240401104753.3432507-1-wtli@nuvoton.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: nau8325: new driver

The driver is for amplifiers NAU8325 of Nuvoton Technology Corporation.
The NAU8325 is a stereo high efficiency filter-free Class-D audio
amplifier, which is capable of driving a 4ohm load with up to 3W output
power.

Signed-off-by: Seven Lee <wtli@nuvoton.com>
Link: https://msgid.link/r/20240327075755.3410381-3-wtli@nuvoton.com
Signed-off-by: Mark Brown <broonie@kernel.org>