samples: wifi: wfa_qt_app: Increase sockets

QT along with hostap needs more FDs, else socket initialization will
fail.

Signed-off-by: Chaitanya Tata <[email protected]>

samples/wifi/wfa_qt_app/prj.conf

@@ -9,7 +9,7 @@ CONFIG_WFA_QT_CONTROL_APP=y
 # Ideally this has to be done in the QT module, but we already override this in the
 # hostap module (7), so, hostap will override QT module's settings, so, we have to
 # override hostap's settings here.
-CONFIG_POSIX_MAX_FDS=12
+CONFIG_POSIX_MAX_FDS=16
 
 # WPA supplicant
 CONFIG_WPA_SUPP=y