torture: Make torture.sh accept --do-all and --donone

Currently, torture.sh accepts --doall on the one hand and --do-none
on the other, which is a bit inconsistent.  This commit therefore adds
--do-all and --donone so that a fully consistent test may be used.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

tools/testing/selftests/rcutorture/bin/torture.sh

@@ -111,7 +111,7 @@ do
 		configs_scftorture="$configs_scftorture $2"
 		shift
 		;;
-	--doall)
+	--do-all|--doall)
 		do_allmodconfig=yes
 		do_rcutorture=yes
 		do_locktorture=yes
@@ -141,7 +141,7 @@ do
 	--do-locktorture|--do-no-locktorture)
 		do_locktorture=`doyesno "$1" --do-locktorture`
 		;;
-	--do-none)
+	--do-none|--donone)
 		do_allmodconfig=no
 		do_rcutorture=no
 		do_locktorture=no