Provide a working GPIOBUS_IVAR() macro for FDT systems.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@273566 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Hook libxo to the build.

Sponsored by:	Juniper Networks, Inc.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@273567 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Hook xo(1) to the build -- it's like echo, but uses libxo to
support emitting machine-readable output.

Sponsored by:	Juniper Networks, Inc.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@273568 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Move the duplicated code to a single function.

No functional changes.


git-svn-id: svn+ssh://svn.freebsd.org/base/head@273569 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f