Power: pmqos: Add emc freq pmqos constraint

It adds min emc freq pmqos.

Bug 1432476

Change-Id: If05c2e8cceffc9ca071ed0b023c29e1ef2921245
Signed-off-by: Puneet Saxena <puneets@nvidia.com>
Reviewed-on: http://git-master/r/360379
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Aleksandr Frid <afrid@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
PM QoS: Fix pmqos notifiers in pm_qos_enabled_set

Send out the notifiers if the enabled flag has been changed. This will
ensure that the notifier fires in all cases.

Bug 1516219

Change-Id: Ie97422f61a9ad56f0ce194a99ce69193d429eadc
Signed-off-by: Sai Gurrappadi <sgurrappadi@nvidia.com>
Reviewed-on: http://git-master/r/413433
Reviewed-by: Automatic_Commit_Validation_User
Tested-by: Diwakar Tundlam <dtundlam@nvidia.com>
Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com>