As far as I know, you can't add it back into DW. Adobe wasn't able to keep up with the speed of phonegap development in DW, so they took it out, rather than offering a constantly outdated tool. It's all done online now.
Thanks Jon Fritz II,
I have installed node.js, git, cordova, Eclipse and Android. I have developed Android small project in Eclipse. This project was import the PhoneGap jar, js and xml file, it's working fine in Eclipse. But the problem is remaining platforms are not working(IOS, bada , Wondows and Blackberry), it is working only Android phone. So I have preferred DW because all platforms work in DW, but there is no PhoneGap Build Service in DW CC 2014.
You suggest one Adobe PhoneGap Build . This is used for upload zip file of total project, but i am developing only Android project remaining not developed. Same project develope all platforms are installed in my pc so it's long process as per my knowledge. So I can choose the DW and installed, it's working all platforms. Could you help me please and thanks.