[media] fix saa7111 non-detection

One saa7111 device is reporting a different ID:

saa7115 0-0024: chip found @ 0x48 (ID 0f7111d0e111111) does not match a known saa711x chip.

As this is for sure a saa7111, change the detection code to also
cover this device.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/saa7115.c

@@ -1565,7 +1565,7 @@ static int saa711x_probe(struct i2c_client *client,
 	chip_id = name[5];
 
 	/* Check whether this chip is part of the saa711x series */
-	if (memcmp(name, "1f711", 5)) {
+	if (memcmp(name + 1, "f711", 4)) {
 		v4l_dbg(1, debug, client, "chip found @ 0x%x (ID %s) does not match a known saa711x chip.\n",
 			client->addr << 1, name);
 		return -ENODEV;