pructl is an utility to interface with PRUs.
It uses libpru (devel/libpru) and currently supports the BeagleBone
(white/black).

Differential Revision:	https://reviews.freebsd.org/D1271
Reviewed by:	bapt
Approved by:	bapt


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@374085 35697150-7ecd-e111-bb59-0022644237b5