Support DiSEqC envelope mode. Feature is enabled by setting
config->diseqc_envelope_mode = true (default: disabled).
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Acked-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>