Add check for READ ONLY flag

Add a check for V4L2_CTRL_FLAG_READ_ONLY to avoid request
testing for such controls.

Signed-off-by: Dikshita Agarwal <quic_dikshita@quicinc.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
diff --git a/utils/v4l2-compliance/v4l2-test-buffers.cpp b/utils/v4l2-compliance/v4l2-test-buffers.cpp
index fa8c37c..b8de7af 100644
--- a/utils/v4l2-compliance/v4l2-test-buffers.cpp
+++ b/utils/v4l2-compliance/v4l2-test-buffers.cpp
@@ -2032,7 +2032,8 @@
 		if (qctrl.type != V4L2_CTRL_TYPE_INTEGER &&
 		    qctrl.type != V4L2_CTRL_TYPE_BOOLEAN)
 			continue;
-		if (qctrl.flags & V4L2_CTRL_FLAG_WRITE_ONLY)
+		if (qctrl.flags & V4L2_CTRL_FLAG_WRITE_ONLY ||
+		    qctrl.flags & V4L2_CTRL_FLAG_READ_ONLY)
 			continue;
 		if (is_vivid && V4L2_CTRL_ID2WHICH(qctrl.id) == V4L2_CTRL_CLASS_VIVID)
 			continue;