[CEC] <Active Source> on Routing Control

Wake up the playback device and optionally send <Active Source> on
Routing Control messages

Before the change: No response to <Routing Change> or <Routing
Information>

After the change: Device wakes up (and optionally sends <Active Source>)
after receiving <Routing Change> or <Routing Information> with its
physical address

For better configurability, a "playback_device_action_on_routing_control" system
property is introduced which controls what should be the behaviour of the device.

Bug: 153950818
Test: flashed a playback device and inspected CEC messages
Change-Id: I5ef3d624f5189dac91d3fd0211e16f00e7a6b77b