Claim torch API support though there is no device
actually has a flash unit. This is to workaround
an issue in camera service where it falls back
to legacy camera HAL1 control if the device does
not report torch API support (and external camera
HAL does not implement HAL1)
Test: CtsVerifier FlashLight test
Bug: 113336515
Change-Id: I945b35fecfed3b2698b1e9bb1d8faad8699258d2
1. Add EXIF MAKE/MODEL tag
2. Add retry loop for V4L2 open failure
3. Do not add external camera if ExternalCameraDevice cannot be
initialized
Bug: 72261912
Bug: 72569850
Change-Id: I06df1fbbb4afabea1a9a74aca9e288b24966cb0b