hwmon: (pmbus) Add support for Lineage Power MDT040

MDT040 is supported by the generic PMBus driver. Add device ID and reference to
datasheet. Also mention Lineage Power device support in Kconfig.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/drivers/hwmon/pmbus/pmbus.c b/drivers/hwmon/pmbus/pmbus.c
index 7d5161d..7e91700 100644
--- a/drivers/hwmon/pmbus/pmbus.c
+++ b/drivers/hwmon/pmbus/pmbus.c
@@ -185,6 +185,7 @@
 	{"adp4000", 1},
 	{"bmr453", 1},
 	{"bmr454", 1},
+	{"mdt040", 1},
 	{"ncp4200", 1},
 	{"ncp4208", 1},
 	{"pdt003", 1},