UPSTREAM: mwifiex: implement cfg80211 mgmt_frame_register handler

UPSTREAM: mwifiex: implement cfg80211 mgmt_frame_register handler

Add a new command to implement mgmt_frame_register.

Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@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: I7ff7594ec8b7d407b8425210f2830586136ff39c
Reviewed-on: https://gerrit.chromium.org/gerrit/34851
Reviewed-by: Paul Stewart <pstew@chromium.org>
Commit-Ready: Bing Zhao <bzhao@marvell.com>
Tested-by: Bing Zhao <bzhao@marvell.com>