Fix LED mutex stuff

Convert LED and personal state modules to the new mutex/hwlock API. Also fix a missing I2C bus lock ...

changed milestone to %v1.15

added 1-Bug 3-Epicardium 6 - Needs Review labels

Looks good to me! Thanks for keeping our codebase clean.

However, I'm only a bot - so a human will still have to approve this request.

Stress-tested for the duration of a very interesting talk about exoplanets :)

@gerd briefly mentioned an issue with personal state locking up the system when running continuously. This might have been the cause ...

added 7 commits

• 84192255...3b436505 - 3 commits from branch master
• e489b211 - chore(leds): Convert LEDs module to new mutex API
• 0702114c - chore(personal-state): Convert to new hwlock API
• 9c5d8003 - fix(leds): Add a missing I2C bus-lock
• cb1712d5 - fix(leds): Consolidate led locking

Compare with previous version

resolved all threads

works for me

merged

mentioned in commit 2cd151e7