Steam Deck OLED SMM locked down status

[Revival8697]

I noticed that the SMM locked down status keep changing from Locked to Unlocked. I can temporary "fix" this by doing a reboot. I don't think this is expected behavior.

https://fwupd.github.io/libfwupdplugin/hsi.html#smm-locked-down

Output of $ fwupdmgr security:

...
Host Security Events
  2025-12-06 10:41:42:  ✔ SMM locked down changed: Unlocked → Locked
  2025-12-04 11:53:14:  ✘ SMM locked down changed: Locked → Unlocked
  2025-12-02 07:44:37:  ✔ SMM locked down changed: Unlocked → Locked
  2025-11-27 10:24:14:  ✘ SMM locked down changed: Locked → Unlocked
  2025-11-27 10:16:23:  ✔ SMM locked down changed: Unlocked → Locked
  2025-11-24 05:08:13:  ✘ SMM locked down changed: Locked → Unlocked
  2025-11-21 08:21:28:  ✔ SMM locked down changed: Unlocked → Locked
  2025-11-19 12:32:23:  ✘ SMM locked down changed: Locked → Unlocked
  2025-11-19 12:30:03:  ✔ SMM locked down changed: Unlocked → Locked