tests: Use 16 instead of 13 as the cwmin/cwmax invalid case

This is needed to allow the parser to accept 15 which is actually a
valid value.

Signed-off-by: Jouni Malinen <j@w1.fi>

tests/hwsim/test_hapd_ctrl.py

@@ -393,9 +393,9 @@ def test_hapd_ctrl_set_error_cases(dev, apdev):
                "local_pwr_constraint -1",
                "local_pwr_constraint 256",
                "wmm_ac_bk_cwmin -1",
-               "wmm_ac_be_cwmin 13",
+               "wmm_ac_be_cwmin 16",
                "wmm_ac_vi_cwmax -1",
-               "wmm_ac_vo_cwmax 13",
+               "wmm_ac_vo_cwmax 16",
                "wmm_ac_foo_cwmax 6",
                "wmm_ac_bk_aifs 0",
                "wmm_ac_bk_aifs 256",