selftests: mlxsw: Consider VxLAN learning enabled as valid

The test currently expects that a configuration which includes a VxLAN
device with learning enabled to fail.

Previous patches enabled VxLAN learning in mlxsw, so change the test
accordingly.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tools/testing/selftests/drivers/net/mlxsw/vxlan.sh

@@ -167,7 +167,7 @@ sanitization_single_dev_learning_enabled_test()
 	ip link add name vxlan0 up type vxlan id 10 learning noudpcsum \
 		ttl 20 tos inherit local 198.51.100.1 dstport 4789
 
-	sanitization_single_dev_test_fail
+	sanitization_single_dev_test_pass
 
 	ip link del dev vxlan0
 	ip link del dev br0