sensorhandler: Add functionality to use m, b, b_exp from config.yaml

Change-Id: I1b5b8a5e0e5abd74eadde494728f363cf1ca4ec6
Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/types.hpp b/types.hpp
index 4ad3306..37066f5 100644
--- a/types.hpp
+++ b/types.hpp
@@ -32,12 +32,20 @@
 using InstancePath = std::string;
 using Type = uint8_t;
 using ReadingType = uint8_t;
+using Multiplier = uint16_t;
+using OffsetB = uint16_t;
+using Exponent = uint8_t;
+using ScaledOffset = int64_t;
 
 struct Info
 {
    Type sensorType;
    InstancePath sensorPath;
    ReadingType sensorReadingType;
+   Multiplier coefficientM;
+   OffsetB coefficientB;
+   Exponent exponentB;
+   ScaledOffset scaledOffset;
    DbusInterfaceMap sensorInterfaces;
 };