Build libctscamera2jni with the NDK.

Undo the workarounds for not having libcamera2ndk available in the
platform yet. I've moved libcamera2ndk over to ndk_library.

Test: make checkbuild tests
Bug: http://b/30465923
Change-Id: I8f7fc1152407191a2d60b2d53b56a79e117f7242
1 file changed