staging: brcm80211: remove typedefs that were flagged by checkpatch

The previous patch resulted in checkpatch to complain about 'new'
typedefs that were relocated to another include file. This commits
removes those typedef structures.

Reviewed-by: Roland Vossen <rvossen@broadcom.com>
Reviewed-by: Brett Rudley <brudley@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>