e6060sw.4: Improve title and add HARDWARE

For visibility in apropos and inclusion in the hardware release notes.

MFC after: 3 days
Reviewed by: adrian, mhorne
Approved by: mhorne (mentor)
Approved by: re (cperciva)
Differential Revision: https://reviews.freebsd.org/D50321

(cherry picked from commit bef89c155e77dd471af596a43f3914b754cc5155)
(cherry picked from commit 5e0e046d95a92aab8bea856fe0008870ee11bfc9)