android: camera_device: Pass camera3 request to descriptor

The Camera3RequestDescriptor class can access the number of buffers
and the frame number from the camera3_capture_request_t instead of
having the caller passing them to the constructor.

This change allows to access other fields of the capture request, such
as the capture settings.

Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>

src/android/camera_device.h

@@ -75,8 +75,7 @@ private:
 
 	struct Camera3RequestDescriptor {
 		Camera3RequestDescriptor(libcamera::Camera *camera,
-					 unsigned int frameNumber,
-					 unsigned int numBuffers);
+					 const camera3_capture_request_t *camera3Request);
 		~Camera3RequestDescriptor();
 
 		uint32_t frameNumber_;