PSUSensor: add ina238 support

Add device ina238 reading support.

Change-Id: If8dd323498ca661d2e3cfa116ddef60d91501c55
Signed-off-by: Potin Lai <potin.lai@quantatw.com>
diff --git a/src/PSUSensorMain.cpp b/src/PSUSensorMain.cpp
index c16f4fe..7a5e24c 100644
--- a/src/PSUSensorMain.cpp
+++ b/src/PSUSensorMain.cpp
@@ -60,6 +60,7 @@
     {"DPS800", I2CDeviceType{"dps800", true}},
     {"INA219", I2CDeviceType{"ina219", true}},
     {"INA230", I2CDeviceType{"ina230", true}},
+    {"INA238", I2CDeviceType{"ina238", true}},
     {"IPSPS1", I2CDeviceType{"ipsps1", true}},
     {"IR38060", I2CDeviceType{"ir38060", true}},
     {"IR38164", I2CDeviceType{"ir38164", true}},