#WPS stuff
# Enable control interface for PBC/PIN entry
ctrl_interface=/var/run/hostapd
eap_server=1
wps_state=2
ap_setup_locked=1
wps_pin_requests=/var/run/hostapd.pin-req
config_methods=label display push_button keypad
#WPS model info stuff change to suit your needs
device_name=USB2.0 WLAN
manufacturer=ATHEROS
model_name=WAP
model_number=123
hostapd_cli wps_pbc
Then you should get this and your device should be able to connect now.
Selected interface 'wlan0'
OK
hostapd, enable, wps, wireless, devices, printersedit, etc, conf, restart, interface, pbc, entry, ctrl_interface, var, eap_server, wps_state, ap_setup_locked, wps_pin_requests, req, config_methods, label, display, push_button, keypad, info, device_name, usb, wlan, manufacturer, atheros, model_name, wap, model_number, existent, router, hostapd_cli, wps_pbc, selected, ok,