V4L/DVB (9026): Add support for ST STV0288 demodulator and cards with it.

Add support for ST STV0288 demodulator and cards with it,
such as TeVii S420.
Patch is co-authored with Georg Acher <acher@baycom.de>

Signed-off-by: Georg Acher <acher@baycom.de>
Signed-off-by: Igor M. Liplianin <liplianin@me.by>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/cx88/cx88.h b/drivers/media/video/cx88/cx88.h
index fa3a725..e17bd51 100644
--- a/drivers/media/video/cx88/cx88.h
+++ b/drivers/media/video/cx88/cx88.h
@@ -226,6 +226,7 @@
 #define CX88_BOARD_TEVII_S460              70
 #define CX88_BOARD_OMICOM_SS4_PCI          71
 #define CX88_BOARD_TBS_8920                72
+#define CX88_BOARD_TEVII_S420              73
 
 enum cx88_itype {
 	CX88_VMUX_COMPOSITE1 = 1,