[media] Add Cinergy S2 rev.4 support

This patch derives from previous one(s) by CrazyCat. I used the commit adding rev.3 to mainline Linux kernel as an example, so credits go to its author(s).
The hardware seems to scan and tune OK.
Signed-off-by: Enrico Mioso <mrkiko.rs@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/usb/dvb-usb/dw2102.c

@@ -1641,6 +1641,7 @@ enum dw2102_table_entry {
 	TEVII_S632,
 	TERRATEC_CINERGY_S2_R2,
 	TERRATEC_CINERGY_S2_R3,
+	TERRATEC_CINERGY_S2_R4,
 	GOTVIEW_SAT_HD,
 	GENIATECH_T220,
 	TECHNOTREND_S2_4600,
@@ -1670,6 +1671,7 @@ static struct usb_device_id dw2102_table[] = {
 	[TEVII_S632] = {USB_DEVICE(0x9022, USB_PID_TEVII_S632)},
 	[TERRATEC_CINERGY_S2_R2] = {USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_S2_R2)},
 	[TERRATEC_CINERGY_S2_R3] = {USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_S2_R3)},
+	[TERRATEC_CINERGY_S2_R4] = {USB_DEVICE(USB_VID_TERRATEC, USB_PID_TERRATEC_CINERGY_S2_R4)},
 	[GOTVIEW_SAT_HD] = {USB_DEVICE(0x1FE1, USB_PID_GOTVIEW_SAT_HD)},
 	[GENIATECH_T220] = {USB_DEVICE(0x1f4d, 0xD220)},
 	[TECHNOTREND_S2_4600] = {USB_DEVICE(USB_VID_TECHNOTREND,