libcamera: v4l2_controls: Remove V4L2ControlList class

The V4L2ControlList class only provides a convenience constructor for
the ControlList, which can easily be moved to the ControlList class and
may benefit it later (to construct a ControlList from controls supported
by a camera). Move the constructor and remove V4L2ControlList.

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

test/v4l2_videodevice/controls.cpp

@@ -46,7 +46,7 @@ protected:
 		const ControlRange &saturation = info.find(V4L2_CID_SATURATION)->second;
 
 		/* Test getting controls. */
-		V4L2ControlList ctrls(info);
+		ControlList ctrls(info);
 		ctrls.set(V4L2_CID_BRIGHTNESS, -1);
 		ctrls.set(V4L2_CID_CONTRAST, -1);
 		ctrls.set(V4L2_CID_SATURATION, -1);