staging: brcm80211: replace broadcom specific byte swapping routines

HTON16/hton16 -> cpu_to_be16 (htons for networking code)
HTON32/hton32 -> cpu_to_be32 (htonl for networking code)
NTOH16/ntoh32 -> be16_to_cpu (ntohs for networking code)
NTOH32/ntoh32 -> be32_to_cpu (ntohl for networking code)
LTOH16/ltoh16 -> le16_to_cpu
LTOH32/ltoh32 -> le32_to_cpu
HTOL16/htol16 -> cpu_to_le16
HTOL32/htol32 -> cpu_to_le32

Signed-off-by: Stanislav Fomichev <kernel@fomichev.me>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>