UPSTREAM: mwifiex: advertise mgmt_stype to cfg80211

UPSTREAM: mwifiex: advertise mgmt_stype to cfg80211

Advertise supported management frame types to cfg80211.

Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
BUG=chrome-os-partner:14959
TEST=pass pre-WiFi Cert. test case 5.2.48

Change-Id: I4498bc5e9812fb00ad33f83ab20ef66774dd8210
Reviewed-on: https://gerrit.chromium.org/gerrit/34850
Reviewed-by: Paul Stewart <pstew@chromium.org>
Commit-Ready: Bing Zhao <bzhao@marvell.com>
Tested-by: Bing Zhao <bzhao@marvell.com>