Comment # 3 on bug 1226088 from Takashi Iwai

Err, if you provide such a long text, please use attachment instead of pasting
on the form.

At least PCI 8086:a0c8 is already included in sof-firmware Supplements, and
this should have been installed if you allowed the recommends.

But, if you installed Leap 15.5, this might not be installed because the
sof-firmware package included in that version didn't support the new chips.

And if you upgrade to Leap 15.6 from that state, sof-firmware might not be
taken as well, because it wasn't installed.  This might be a plausible
scenario.

OTOH, if you installed cleanly Leap 15.6 and it still doesn't work due to the
lack of sof-firmware, it's a problem of the installer that doesn't take the
packages for hardware supplements.

In anyway, it's not issue of kernel or the sof-firmware package itself. 
Reassigned.