firmware: arm_scmi: Add common notifier helpers

Add a pair of notifier chains and generic empty notifier callbacks.
Currently they are still unused but they will be used to act properly
on device request and creation events.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20221222185049.737625-5-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
This commit is contained in:
Cristian Marussi 2022-12-22 18:50:44 +00:00 • committed by Sudeep Holla
commit 53b8c25df7
3 changed files with 92 additions and 2 deletions