staging: vt6656: move s_vFillCTSHead to vnt_rxtx_cts

add need_mic and union vnt_tx_data_head head positions from s_vGenerateTxParameter.

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