Revert "CEC: Remove HdmiControlManager#mLocalPhysicalAddress variable"

This reverts commit 9f5ec0c7d02b123b0f464252eb07a39f7ba1155d.

Reason for revert: this CL removed getPhysicalAddress from the main service thread, which caused errors.

Bug: 269451560
Change-Id: I42c478831c4daa5d17e55f7f8edd253449b863b8
1 file changed