ASoC: wm8904: get platform data from DT

Read in optional codec-specific properties from the device tree.

The platform_data structure is not populated when using device trees.
This change parses optional dts properties to populate it.

- wlf,in1l-as-dmicdat1
- wlf,in1r-as-dmicdat2
- wlf,gpio-cfg
- wlf,micbias-cfg
- wlf,drc-cfg-regs
- wlf,drc-cfg-names
- wlf,retune-mobile-cfg-regs
- wlf,retune-mobile-cfg-names
- wlf,retune-mobile-cfg-hz

Datasheet: https://statics.cirrus.com/pubs/proDatasheet/WM8904_Rev4.1.pdf


Signed-off-by: Ernest Van Hoecke <ernest.vanhoecke@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20250319142059.46692-5-francesco@dolcini.it


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