Replace individual methods with a consolidated CEC nativeSendmessage

It saves us from having to add numerous native methods to HdmiCecService.
A new native method that reports physical address was added in consequence
to be able to build the message in Java side.

Other changes:
 - Substituted more concrete type (cec_device_type_t) to int.
 - Fixed the issue about byte endianness in handling physical
   address/vendor id. The bytes of variable mPhysicalAddress in native
   service were being reversed previously but still worked because they
   were reversed again when copied out to outgoing messages. Vendor id
   had a bug of bytes being reversed. In order to fix the issue, the way
   they are copied to byte array was changed so that it becomes
   independent to byte endianness.
 - CL's for header/HAL implementation changes are:
   https://googleplex-android-review.git.corp.google.com/#/c/437667
   https://googleplex-android-review.git.corp.google.com/#/c/437668

Change-Id: Id1ac683fe54597a2c707f30492c7f86e5392504d