V4L/DVB (11486): em28xx: Add EmpireTV board support

Added EmpireTV entry.
Thanks to Xwang <xwang1976@email.it> to provide data for this board.

Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/Documentation/video4linux/CARDLIST.em28xx b/Documentation/video4linux/CARDLIST.em28xx
index 78d0a6e..bf58d95 100644
--- a/Documentation/video4linux/CARDLIST.em28xx
+++ b/Documentation/video4linux/CARDLIST.em28xx
@@ -61,3 +61,4 @@
  63 -> Kaiomy TVnPC U2                          (em2860)        [eb1a:e303]
  64 -> Easy Cap Capture DC-60                   (em2860)
  65 -> IO-DATA GV-MVP/SZ                        (em2820/em2840) [04bb:0515]
+ 66 -> Empire dual TV                           (em2880)