ASoC: codecs: Add library for FourSemi audio amplifiers

This patch adds firmware loading and parsing support for FourSemi audio
amplifiers. The library handles firmware file (*.bin) generated by the
FourSemi tuning tool, which contains:
- Register initialization settings
- DSP effect parameters
- Multi-scene sound effect switching configurations(optional)

The firmware is required for proper initialization and configuration
of FourSemi amplifier devices.

Signed-off-by: Nick Li <nick.li@foursemi.com>
Link: https://patch.msgid.link/77822D0108CCC1D0+20250811104610.8993-4-nick.li@foursemi.com


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