hwmon: (emc6w201): trivial fix of spelling mistake "Unknwown" -> "Unknown"

trivial fix to spelling mistake in dev_dbg message
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/emc6w201.c

@@ -464,7 +464,7 @@ static int emc6w201_detect(struct i2c_client *client,
 	if (verstep < 0 || (verstep & 0xF0) != 0xB0)
 		return -ENODEV;
 	if ((verstep & 0x0F) > 2) {
-		dev_dbg(&client->dev, "Unknwown EMC6W201 stepping %d\n",
+		dev_dbg(&client->dev, "Unknown EMC6W201 stepping %d\n",
 			verstep & 0x0F);
 		return -ENODEV;
 	}