Noticed some warnings about `Possibly missing firmware for module...` - #4 by freggel.doe
If you do not have hardware that needs those other firmware blobs, you needn’t install any of the other firmware packages and can ignore the warnings.
Or Build mkinitcpio-firmware from AUR to get rid of warning messages in mkinitcpio
But installing more firmware will not provide the snd_hdspe audio driver
I suggest you check out this pull request for kernels > v5.18
Fix use of kernel functions unavailable starting with v5.18 by Schroedingers-Cat · Pull Request #12 · PhilippeBekaert/snd-hdspe · GitHub
and this issue report for kernels >v6.1
Make hdspe on kernel 6.1.0 great again · Issue #14 · PhilippeBekaert/snd-hdspe · GitHub
If the audio driver still cannot be complied, I suggest installing earlier kernel: v5.15, v5.10 or v5.4
audio card might have been working with snd-hdsp driver on older kernel
or it might be possible to compile new driver for older kernel