[QLI2.0] [SM8750] ADSP silently fails to start

[lumag]

https://lava.infra.foundries.io/scheduler/job/418659

The ADSP starts to boot, seemingly finding the firmware, but then it remains offline:

[   14.158324] remoteproc remoteproc0: powering up adsp
[   14.164322] remoteproc remoteproc0: Booting fw image qcom/sm8750/adsp.mbn, size 17680824

[INFO] 2026-07-23 17:08:00 - ---- remoteproc0: path=/sys/class/remoteproc/remoteproc0 state=offline firmware=qcom/sm8750/adsp.mbn name=adsp ----
[FAIL] 2026-07-23 17:08:00 - remoteproc0: boot check FAIL (state=offline)
[INFO] 2026-07-23 17:08:00 - Instance results: remoteproc0: boot=FAIL, stop=NA,