BACKPORT: FROMLIST: wpa_supplicant: Add 802.11 status code strings

Logs involving 802.11 status codes output the status code value, but
do not provide any explanation of what the value means. This change
provides a terse explanation of each status code using the latter part
of the status code #define names.

(from http://lists.infradead.org/pipermail/hostap/2019-April/039947.html)

BUG=chromium:801752
TEST=`emerge-nautilus wpa_supplicant` succeeds.

Change-Id: I1bd56ab52a1cb6f3837c371ae010504aca47a047
Reviewed-on: https://chromium-review.googlesource.com/1565688
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Alex Khouderchah <akhouderchah@chromium.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
4 files changed