Lower the confidence of MAX6650/1 detection, as it is really weak.

git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@5780 7894878c-1315-0410-8ee3-d5d059ff63e0

prog/detect/sensors-detect

@@ -5070,7 +5070,7 @@ sub max6650_detect
 	return if i2c_smbus_read_byte_data($file, 0x14) & 0xE0;
 	return if ($conf & 0xC0) or ($conf & 0x07) > 4;
 
-	return 3;
+	return 2;
 }
 
 sub max6655_detect