Add support for new SCMI v3.0 SENSOR_UPDATE notification.

Link: https://lore.kernel.org/r/20201119174906.43862-7-cristian.marussi@arm.comSigned-off-by: NCristian Marussi <cristian.marussi@arm.com>
Signed-off-by: NSudeep Holla <sudeep.holla@arm.com>