src: Improve "bad auth" problems.

For most status codes of the CYW43_EV_AUTH we assume we have are
suffering from a "bad auth". In a congested WiFi environment this
can make it look like your WiFi credentials are wrong.

Ignore "timeout" and "no ack" status codes as well as "unsolicitated
auth packet" as this seems to make a connection more likely to
succeed.

Signed-off-by: Peter Harper <peter.harper@raspberrypi.com>

Author: peterharperuk

src/cyw43_ctrl.c

@@ -387,8 +387,11 @@ void cyw43_cb_process_async_event(void *cb_data, const cyw43_async_event_t *ev)
                 self->wifi_join_state = (self->wifi_join_state & ~WIFI_JOIN_STATE_KIND_MASK) | WIFI_JOIN_STATE_ACTIVE;
             }
             self->wifi_join_state |= WIFI_JOIN_STATE_AUTH;
-        } else if (ev->status == 6) {
-            // Unsolicited auth packet, ignore it
+        } else if (ev->status == 6 || ev->status == 2 || ev->status == 5) {
+            // 2 = Timeout
+            // 5 = No ack
+            // 6 = Unsolicited auth packet
+            // Ignore it, lets keep trying
         } else {
             // Cannot authenticate
             self->wifi_join_state = WIFI_JOIN_STATE_BADAUTH;