CHROMIUM: nl80211: Reassign NL80211_ATTR_SCAN_FLAGS

CHROMIUM: nl80211: Reassign NL80211_ATTR_SCAN_FLAGS

Change the NL80211_ATTR_SCAN_FLAGS value to match upstream kernels.
In doing so, fast-forward the contents of the nl80211_attrs enum to
its contents as of the current wireless-testing kernel.

CQ-DEPEND=I315dce8b3c39ae02db2a01401f83666f81b51f63
BUG=chromium-os:38618
TEST="test-flimflam scan" with new supplicant and kernel installed

Change-Id: Ie27c65a6eea1006f34346c51768d797ceadb7951
Signed-off-by: Paul Stewart <pstew@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/42640
Reviewed-by: mukesh agrawal <quiche@chromium.org>