drivers: qcom: rpmh: Setup wake requests as 'complete'

Since wake requests should guarantee that the requested resources are in
the required state before the processor is run, setup the wake set
requests as 'complete'. Sleep requests need not be setup as 'complete'.

Also remove the unnecessary check in __rpmh_write(), since we will never
write sleep and wake requests to the controller at that time.

Change-Id: I66790e514b118e2668f5546e616a015c3dcb1108
Signed-off-by: Lina Iyer <ilina@codeaurora.org>