staging: comedi: ni_labpc_common: Reformat multiple line dereference

Reformat multi-line dereferencing of function arguments
&cmd->scan_begin_arg. Also reformat another call to the same function to
follow the same argument formatting structure. Problem detected by
checkpatch script.

Signed-off-by: Deepak R Varma <[e-mail]>
Link: https://lore.kernel.org/r/20200322185932.GA12594@deeUbuntu
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/comedi/drivers/ni_labpc_common.c

···
 	/* make sure scan timing is not too fast */
 	if (cmd->scan_begin_src == TRIG_TIMER) {
 		if (cmd->convert_src == TRIG_TIMER) {
-			err |= comedi_check_trigger_arg_min(&cmd->
-							    scan_begin_arg,
-							    cmd->convert_arg *
-							    cmd->chanlist_len);
+			err |= comedi_check_trigger_arg_min(
+					&cmd->scan_begin_arg,
+					cmd->convert_arg * cmd->chanlist_len);
 		}
-		err |= comedi_check_trigger_arg_min(&cmd->scan_begin_arg,
-						    board->ai_speed *
-						    cmd->chanlist_len);
+		err |= comedi_check_trigger_arg_min(
+					&cmd->scan_begin_arg,
+					board->ai_speed * cmd->chanlist_len);
 	}
 
 	switch (cmd->stop_src) {