snd-intel-dspcfg dsp_driver=1 patch to force use of snd_hda_intel driver was a very useful workaround in 2020/2021, but is no longer needed
Official Manjaro ISOs now include package sof-firmware.
Sound Open Firmware drivers should be installed and working on Live ISOs for most Intel laptops
so HowTo is no longer needed except for advising against using earlier patch