android: camera_device: Return Camera as shared_ptr

Return the Camera wrapped by the CameraDevice as a shared_ptr.
This will be required to construct the FrameBuffer allocator in
the CameraStream class.

Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>

src/android/camera_device.h

@@ -49,7 +49,7 @@ public:
 
 	unsigned int id() const { return id_; }
 	camera3_device_t *camera3Device() { return &camera3Device_; }
-	const libcamera::Camera *camera() const { return camera_.get(); }
+	std::shared_ptr<libcamera::Camera> camera() const { return camera_; }
 	libcamera::CameraConfiguration *cameraConfiguration() const
 	{
 		return config_.get();