Implement add/remove device info api for Hdmi Cec device.

In order to manage info of all cec devices connected hdmi bus,
HdmiCecController should have data structure for them.
This change includes two major pieces.

1. HdmiCecDeviceInfo
 It's data structure containing basic device information such as
 logical address, physicall address, device type and vendor id.
 It will not be available to thirdparty but some system component
 like TIF needs this to update device information connected to
 its hdmi ports.

2. Managing device list in HdmiCecController.
 HdmiCecController is a host to manage all CEC device.
 and we need to have logic add or remove as well as get it.
 All cec devices are managed as sparsearray which uses logical address as key.

This change introduces internal api and the later change will have logic
to call these apis.

Change-Id: Idc2f189ac0bffe904e011ced0ac991f16da07db1