K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2015-03-15T21:56:12.488638Z
K 7
svn:log
V 462
Start fleshing out some MAC address helper functions.

A lot of these embedded boards don't have a unique MAC address per
device stored somewhere unique - sometimes they'll have one MAC
for both arge NICs; someties they'll have one MAC for both arge NICs
/and/ the ath NICs.  In these instances, we need to derive device
specific MAC addresses from the base MAC address.

These functions will be used by some follow-up code that'll slot
into if_arge and if_ath.

END