V4L/DVB (11770): cx23885: add ATSC/QAM tuning support for Hauppauge WinTV-HVR1255

Signed-off-by: Michael Krufky <mkrufky@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/Documentation/video4linux/CARDLIST.cx23885 b/Documentation/video4linux/CARDLIST.cx23885
index ce62f5a..e7ed710 100644
--- a/Documentation/video4linux/CARDLIST.cx23885
+++ b/Documentation/video4linux/CARDLIST.cx23885
@@ -18,3 +18,4 @@
  17 -> NetUP Dual DVB-S2 CI                                [1b55:2a2c]
  18 -> Hauppauge WinTV-HVR1270                             [0070:2211]
  19 -> Hauppauge WinTV-HVR1275                             [0070:2215]
+ 20 -> Hauppauge WinTV-HVR1255                             [0070:2251]