scmi_power_domain: Add agent logical domain handling in scmi_power_domain
This change adds per agent view for SCMI Power protocol. It allows platforms to define agent's relative mapping of power domains and consequently limits their visibility of domains as per their scope of operability. SCMI power_domain handles an additional layer of translation (agent_pd_index --> power_hal_domain_index).
Signed-off-by: Abhishek Rawat abhishek.rawat@arm.com