i915 audio totally broken

i915 audio is totally busted. The HDMI PCM devices are completely missing.

Bisected to: # first bad commit: [65cbbfa4e2ca81a1888e3ee82c9b5ae01356e11d] ALSA: hda: Intel: Move snd_hdac_i915_init to before probe_work.

I have everething built as a module in case that should matter.

CI also seems to be showing the symptoms as igt@kms_hdmi_inject@inject-audio has started to skip in shard runs: https://intel-gfx-ci.01.org/tree/drm-tip/shards-all.html?testfilter=inject-audio Curiously it still seems to pass in BAT runs, so perhaps there is some module load ordering issue or something...