Camera2: Switch to auto-gen C++ binder interfaces

 - Move camera AIDL files to frameworks/av
 - Update makefiles to point to new AIDL locations
 - Adjust camera2 implementation to match modifications to AIDL needed
   for native AIDL auto-generation
 - Move Surface.aidl to frameworks/native to allow use in
   native AIDL. Use android::view::Surface in Surface JNI to
   serialize Surface objects to ensure parceling compatibility.
 - Adjust service binder tests to new interface

Bug: 25091611
Change-Id: I85b817374b34a4540fa145328dbe4bbf7f746baf