mod_power_domain: Deny suspend requests if multiple cores remain active
SCMI system suspend requests must be denied if multiple APs are active. This patch enables this with a check in the mod_power_domain API call.
Signed-off-by: James McGregor james.mcgregor2@arm.com Change-Id: I0845de0ba12cee66ac1a2d6e3efced7dd4417df6