staging: vt6656: rxtx.c s_vFillRTSHead PK_TYPE_11A allow fall through AUTO_FB_NONE

byFBOption == AUTO_FB_NONE (0) is the same as PK_TYPE_11B

Reverse if condition to break and allow fall through.

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