Soundwire support for CS42L43 and CS35L56 on Intel MTL

[Chris Chiu]

[Impact]

Audio doesn't work on Dell Pista/Diablo MTL platforms.

[Fix]

Kernel driver, ALSA ucm, and firmware fixes are required. For firmware-sof, it's the upstream commit 7d2c7f5ad44d ("Add sof-v2.9 for Intel hardware").

[Test Case]
1. Install linux-firmware with the FW files from upstream https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/?id=57077702373e7ef40f0ca197724428d614bd92f8
2. Install alsa UCM file from upstream https://github.com/alsa-project/alsa-ucm-conf/commit/e87dde51d68950537f92af955ad0633437cc419a and https://github.com/alsa-project/alsa-ucm-conf/commit/8e39917518b62cce44d098bd6fe5d2c1b41f92bd
3. Make sure the linux kernel version is later than v6.9 or has the https://github.com/thesofproject/linux/pull/4829/commits backported
4. Go to audio setting to make sure the audio input/output device are not dummy

[Where problems could occur]
It's simply an additional tplg file which only new kernel driver knows to how to load.

[Chris Chiu (mschiu77)]

MR proposed https://code.launchpad.net/~mschiu77/ubuntu/+source/firmware-sof/+git/firmware-sof/+merge/467749

PPA https://launchpad.net/~mschiu77/+archive/ubuntu/lp2069760-noble provided here

[Chris Chiu (mschiu77)]

Will push a fix for the MR and PPA to coordinate with https://bugs.launchpad.net/ubuntu/+source/firmware-sof/+bug/2069417