ARM: cpuquiet: Go to and stay on G-CPU if min_cpus 1 is requested

Only return to LP-CPU if minimum number of cpus requested by the PM QoS
interface is at the default 0 level.

Change-Id: I1384c7fc62b86e385e10b4baaf81eb600f31da6e
Signed-off-by: Sai Charan Gurrappadi <sgurrappadi@nvidia.com>
Reviewed-on: http://git-master/r/109831
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>