V4L/DVB (6798): saa7134: enable LNA in analog mode for Hauppauge WinTV HVR-1110

Thanks to Hermann Pitton for noticing that this was missing.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Cc: Hermann Pitton <hermann-pitton@arcor.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>