staging: brcm80211: remove usage of struct osl_info from util sources

Most of the util source files do not need the osl_info anymore due
to previous patches so usage of it has been removed.

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>