HDMI: Add Hotplug Detection Signal support

The HPD (Hotplug Detection) signal indicates the type of signal that the
HAL should use.

Bug: 258394639
Test: atest VtsHalTvHdmiAidlTargetTest
Change-Id: Ic391064d10636aca3c8e5c256c41d40144fbfe9c
9 files changed