media: s5h1411.c: Fix a typo in the VSB SNR table

This looks like a typo. By manipulating the antenna on a device while
monitoring the reported SNR, I was able to see the unexpected jump.
After applying this patch, the spike was no longer present.

Link: https://lore.kernel.org/linux-media/20211003001805.735092-1-logans@cottsay.netSigned-off-by: Scott K Logan <logans@cottsay.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/dvb-frontends/s5h1411.c

@@ -150,7 +150,7 @@ static struct vsb_snr_tab {
 	{  0x35b, 235, },
 	{  0x353, 230, },
 	{  0x349, 225, },
-	{  0x340, 320, },
+	{  0x340, 220, },
 	{  0x337, 215, },
 	{  0x327, 210, },
 	{  0x31b, 205, },