wifi/espat, rtl8720dn, wifinina: move towards standard common interface for wifi adaptors

Signed-off-by: deadprogram <ron@hybridgroup.com>

examples/rtl8720dn/tcpclient/main.go

@@ -47,7 +47,7 @@ func run() error {
 	}
 	net.UseDriver(rtl)
 
-	err = rtl.ConnectToAP(ssid, password)
+	err = rtl.ConnectToAccessPoint(ssid, password, 10*time.Second)
 	if err != nil {
 		return err
 	}