Now that we've have proper wrappers for the fallback mechanism
we can easily share the reboot notifier for the firmware_class
at all times.

This change will make subsequent modifications to the reboot
notifier easier to review.
Signed-off-by: NLuis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>