staging: vt6656: rxtx.c add no rts struct vnt_tx_datahead_a_fb

Add no rts/cts vnt_tx_datahead_a_fb to union vnt_tx_data_head.

The need_mic now applies to all modes of packet type PK_TYPE_11A.

and return vnt_rxtx_datahead_a_fb in s_vGenerateTxParameter

This removes pvTxDataHd pointer assignment.

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