tests: Add the forgotten wlantest_setup() call to a TDLS test

One TDLS test case was using wlantest without doing the setup first.
This makes the test not work on real hardware. Fix the issue by adding
the wlantest setup to the test.

Signed-off-by: Jonathan Afek <jonathanx.afek@intel.com>

tests/hwsim/test_ap_tdls.py

@@ -529,6 +529,7 @@ def test_tdls_chan_switch(dev, apdev):
         raise HwsimSkip("Driver does not support TDLS channel switching")
 
     hapd = hostapd.add_ap(apdev[0], { "ssid": "test-open" })
+    wlantest_setup(hapd)
     connect_2sta_open(dev, hapd)
     setup_tdls(dev[0], dev[1], hapd)
     if "OK" not in dev[0].request("TDLS_CHAN_SWITCH " + dev[1].own_addr() + " 81 2462"):