VTS: Add test for device version 3.5

Also includes:
- Add test for getPhysicalCameraCharacteristics.
- Doc update for the new HIDL API.
- Tighten boundary check for camera ID in CameraModule.

Test: vts-tradefed run commandAndExit vts --skip-all-system-status-check
--skip-preconditions --module VtsHalCameraProviderV2_4Target -l INFO

Bug: 79523700
Bug: 115969176
Bug: 116512585
Change-Id: I051d1b0c91834781a1f8d893ed5ebfa579b03774
diff --git a/camera/common/1.0/default/include/CameraModule.h b/camera/common/1.0/default/include/CameraModule.h
index ed853bf..aee9654 100644
--- a/camera/common/1.0/default/include/CameraModule.h
+++ b/camera/common/1.0/default/include/CameraModule.h
@@ -75,6 +75,7 @@
             int32_t keyTag, const Vector<int32_t>& appendKeys);
     status_t filterOpenErrorCode(status_t err);
     camera_module_t *mModule;
+    int mNumberOfCameras;
     KeyedVector<int, camera_info> mCameraInfoMap;
     KeyedVector<int, int> mDeviceVersionMap;
     KeyedVector<int, camera_metadata_t*> mPhysicalCameraInfoMap;