Add CameraStreamExternalBuffering test case

This change adds a VTS test case to validate a new
IEvsCamera::importExtenralBuffers() API.  New test case allocates
graphic buffers and passes them via a new API call.

Bug: 152493110
Test: vts-tradefed VtsHalEvsV1_1_TargetTest
Change-Id: I157f3cf45092a9a4ca8bf5bf9ea54aa62d15225c
1 file changed