Replace use of `TRIG_RT` command flag with the equivalent flag
`CMDF_PRIORITY`.  The numeric value is unchanged.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
        struct waveform_private *devpriv = dev->private;
        struct comedi_cmd *cmd = &s->async->cmd;
 
-       if (cmd->flags & TRIG_RT) {
+       if (cmd->flags & CMDF_PRIORITY) {
                dev_err(dev->class_dev,
                        "commands at RT priority not supported in this driver\n");
                return -1;