CHROMIUMOS: Enable user to read ath9k debug

CHROMIUMOS: Enable user to read ath9k debug

Enable read-access to some debug information for ath9k.  These
can then be included in diagnostics and trouble reports.

Signed-off-by: Paul Stewart <pstew@chromium.org>
BUG=chromium-os:20831
TEST=Manual -- ensure readability of debug files as user chronos

Change-Id: Ib4d1530319a420ab9cc8ea73910a9279f734bc9d
Reviewed-on: http://gerrit.chromium.org/gerrit/8297
Reviewed-by: Sam Leffler <sleffler@chromium.org>
Tested-by: Paul Stewart <pstew@chromium.org>
[3.4-rc5: merge error - removed references to fops_wiphy. --grundler]