Power/PSIMAR: Dispatch PowerChannelState on PowerChannelControl messages.
Power/PSIMAR: Implemented QueryPowerChannelState.
Merge branch 'bug/psimar-power-state'

Bug Fix: The task 'Power/PSIMAR' now dispatches the current state of
the power channel after successful power channel control commands and
query power channel state requests.

Authored By: Ricardo Martins
Reviewed By: José Braga