Add 2 new properties in VHAL for Special Input handling on passenger displays

- HW_KEY_INPUT_V2: A per seat property to inject the h/w key events like HOME, BACK, VOLUME etc
- HW_MOTION_INPUT: A per seat property to inject the h/w motion events i.e. motion events arising from mouse, trackpads etc.

Bug: 260000521
Test: Builds successfully

Change-Id: I1b49823769f4b5a2bdcc94e58c6d18c7332f5a28