psusensor: Add support for MAX5970

MAX5970 support has been recently enabled in Linux [1] and is required
for IBM Genesis3/SBP1. While the MAX5970 is an eFuse and not a regulator
it's threated as such by setting a fixed output voltage that is always
equal to the input voltage.

MAX5970 provides input voltage and current readings.

1: https://github.com/torvalds/linux/commit/f5afdd13ed6c643c7243e685fe3cf5484b3fdfae

Change-Id: I0aaecc92ad2fdb9a875a08301004cacb6dee1cce
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
diff --git a/src/PSUSensorMain.cpp b/src/PSUSensorMain.cpp
index a49adde..c16f4fe 100644
--- a/src/PSUSensorMain.cpp
+++ b/src/PSUSensorMain.cpp
@@ -71,6 +71,7 @@
     {"ISL69243", I2CDeviceType{"isl69243", true}},
     {"ISL69260", I2CDeviceType{"isl69260", true}},
     {"LM25066", I2CDeviceType{"lm25066", true}},
+    {"MAX5970", I2CDeviceType{"max5970", true}},
     {"MAX16601", I2CDeviceType{"max16601", true}},
     {"MAX20710", I2CDeviceType{"max20710", true}},
     {"MAX20730", I2CDeviceType{"max20730", true}},