Camera: require torch API support for Android Q

Torch API was mandated on legacy libhardware camera module 2.4.
We kept the option of not supporting this API because the first
HIDL legacy wrapper needs to also support libhardware camera
module 1.0 + HAL1.0. Now that HAL 1.0 is no longer supported,
we can reenforce the torch API being supported by camera HAL as
this is critical to power usage of flashlight usecase.

Test: adb shell VtsHalCameraProviderV2_4TargetTest
--hal_service_instance=android.hardware.camera.provider@2.4::ICameraProvider/legacy/0
Bug: 113336515

Change-Id: I0dcf2e7a5cddadcd097caf6913625d8a607065f8