staging: vt6656: rxtx s_vFillCTSHead replace TYPE_CTL_CTS macro

Replace with IEEE80211_FTYPE_CTL | IEEE80211_STYPE_CTS from linux/ieee80211.h
to get value of TYPE_CTL_CTS and endian correct to frame_control.

Remove old macros in tether.h

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>