git: Update porting_drivers.txt

[Rimvydas Jasinskas]

commit d00c6212b10085c91162e4ff00971ea19e324584
Author: zrj <rimvydas.jasinskas at gmail.com>
Date:   Sun Feb 4 17:58:34 2018 +0200

    Update porting_drivers.txt

Summary of changes:
 doc/porting_drivers.txt | 27 +++++++++++++++++++++++----
 1 file changed, 23 insertions(+), 4 deletions(-)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/d00c6212b10085c91162e4ff00971ea19e324584


-- 
DragonFly BSD source repository