staging: brcm80211: fill in proper rx rate in mac80211 rx status

staging: brcm80211: fill in proper rx rate in mac80211 rx status

commit 5a84d6ad4c9306afb467a600a4c6d7b50da49440 upstream.

The brcmsmac driver supports different rates on 5GHz but this is not
taken into account when providing the rate index in the receive
status information passed to mac80211.

Reviewed-by: Roland Vossen <rvossen@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Henry Ptasinski <henryp@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>