firmware: add helper to unregister pm ops

This will be used later to unfold on error on init.

Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Luis R. Rodriguez 2017-11-20 09:45:31 -08:00 • committed by Greg Kroah-Hartman
commit a67e503b67