V4L/DVB (10923): saa7134: fix typo in product name

replace occurances of "HVR1150" with "HVR1120" - this was a typo.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>