Update VtsHalEvsV1_1TargetTest

This CL makes following changes to fix bugs in VTS test cases.

* Correct the definition of RawStreamConfig and its size constant.
* Update all test cases to use a stream configuration reported by the
  target camera device.
* Update CameraStreamExternalBuffering test cases to take internally
  allocated buffers into account.

Bug: 192460757
Bug: 199626993
Test: atest VtsHalEvsV1_1TargetTest
Change-Id: Ia03775ae543617ba5057e91bbbb5aed9221d1a30
(cherry picked from commit 32a001b9)