test: v4l2_videodevice: controls: Use correct control range in check

A value check on the V4L2_CID_CONTRAST control is using the brightness
control range. Fix it.

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

@@ -87,7 +87,7 @@ protected:
 		}
 
 		if (ctrls.get(V4L2_CID_BRIGHTNESS) != brightness.range().min() ||
-		    ctrls.get(V4L2_CID_CONTRAST) != brightness.range().max() ||
+		    ctrls.get(V4L2_CID_CONTRAST) != contrast.range().max() ||
 		    ctrls.get(V4L2_CID_SATURATION) != saturation.range().min().get<int32_t>() + 1) {
 			cerr << "Controls not updated when set" << endl;
 			return TestFail;