Backport of commit "power: supply: core: Use blocking_notifier_call_chain to avoid RCU complaint")

[Thomas Weißschuh]

Dear stable team,

I would like to propose the commit
bbaa6ffa5b6c ("power: supply: core: Use blocking_notifier_call_chain to avoid RCU complaint")
from mainline for inclusion into the stable kernels.

The commit fixes a RCU violation as indicated in its commit message.

Thanks,
Thomas