Make aacraid(4) working on ASR8805 & ASR8402 in particular. This patch
has been in the PR system for 5 months and then on reviews for another 5.
Nobody came with any cases where it fails, while many people cried for
it to be commited & merged.
Submitted by: Prasad B M <firstname.lastname@example.org>
Reported by: Steven Peterson <email@example.com>
Approved by: scottl
MFC after: 1 month
Differential Revision: https://reviews.freebsd.org/D18408