Implement missing mhl apis

1. get_supported_features
2. get_ecbug_device_rols
3. set_option in native.
4. get_mhl_version
5. get_peer_mhl_version
6. send_scratchpad_command
 - it includes send_scratchpad_command but does not include
  java side implementation. It will be added when we implement
  scratchpad.

Bug: 17096490

Change-Id: Iacb4a41234cbbd2d832908b48d188bd81a301b0f