Refactor input device rumble support.

Change VibrationElement to fixed size array of uint8_t.
Move default amplitude handling to Java.
Address previous code review comments.

Bug: 136215622
Test: Connect game controller with rumble support and play game for
force feedback effect.

Change-Id: Ife7294bd829a2ca88354ffa09f523e43a1bc26dc
5 files changed