The name of the binding is tplinksmarthome. It was part of 2.X and you should be able to install it as other bindings. (depending on what openHAB version you are you have different devices supported.) In case you miss something and are one 2.5.x you could try the jar file in: TP-Link Smarthome binding (Beta) [2.5.0;3.6.0) Put it in the addons directory (likely found here: openHAB on Linux | openHAB)
