Add portID information in HdmiCecDeviceInfo

This change makes it convenient to get the HDMI port ID from the device
info without having to look it up through a separate HdmiPortInfo, which
happens in many places.

Also removed port information lookup loop by introducing two maps variable
in Control Service: port path ->port ID, and port ID -> port info.

Bug: 16547583
Change-Id: Ibfff722a16b626230766058efcc819e9c8ca0663