API to allow an app to be whitelisted for network and wakelock
access for a short period. So even if the device is in idle
mode, such apps can be given a chance to download the payload
related to a high priority cloud-to-device message.
This API is meant for system apps only.
A new permission CHANGE_DEVICE_IDLE_TEMP_WHITELIST is required
to make this call.
Bug: 21525864
Change-Id: Id7a761a664f21af5d7ff55aa56e8df98d15511ca
af575b9f8e