scmi_clock: Fix return code when resource is in requested state
Created by: leandro-arm
The SCP firmware returned an error when an agent tries to set any resource to its current state. This takes care of the behavior when Uboot turns ON a resource and the kernel tries to again enable it at boot (both are same agents on same mailbox channel).
Change-Id: Ib1f094ef008d36d9979f5b69a72440ca77c1813a Signed-off-by: Leandro Belli leandro.belli@arm.com