Log pid of the proccess that calls oneTouchPlay in HdmiControlService

Framework exposes oneTouchPlay API to other applications via
HdmiControlManager. We want to keep more debug messages on who calls the
API when oneTouchPlay happens in the system.

Test: manual
Bug: 118763581
Change-Id: Ic4ff7a9781f4da28c9c1b9edf2392caf338a75d9
(cherry picked from commit c68687b7d8fd0ecf978340b3cffeaa23d88a45d7)