Move the adm1030 driver to the proper location, and rename it.

For compatibility, 'device windtunnel' is still supported, but one should use
'device adm1030' instead, and this has been updated in GENERIC and NOTES.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@273156 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f