staging: vt6656: rename PIPEnsControlOut/CONTROLnsRequestOut to vnt_control_out

Rename all CONTROLnsRequestOut and remove macro from control.h

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