android: camera_device: Handle SCALER_CROP_REGION

Handle the SCALER_CROP_REGION control and dynamic metadata by
translating it from the Android format to the associated libcamera
control when processing a request, and the other way around when
handling a request completion.

Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>

src/android/camera_worker.h

@@ -25,6 +25,7 @@ public:
 	CaptureRequest(libcamera::Camera *camera, uint64_t cookie);
 
 	const std::vector<int> &fences() const { return acquireFences_; }
+	libcamera::ControlList &controls() { return request_->controls(); }
 	const libcamera::ControlList &metadata() const
 	{
 		return request_->metadata();