I'm not sure if there is support but you can incorporate axis2 by downloading the zip file and including it in the standalone folder standalone/deployments/axis2-1.6.2-war/WEB-INF/services. Just add the axis folder in deployments then the rest will follow. Also make sure you setup your .profile for $AXIS2_HOME and it's PATH.
After a lot of hard work, we finally got axis2 working in JBoss AS 7. We took the axis2 war bundle and created a Maven project. We have our code archiving the aar files into the services folder, then complile the war and place the war into the /standalone/deployments folder. The war will then be deployed with the server and your services will run.