Update terminology used within repo

Update the terms to more inclusive language. This change if only for
variables used in the repo.

Change-Id: I5151c9c2efab707b5dbc707e55333a3cb8c4e32b
Signed-off-by: Matt Simmering <matthew.simmering@intel.com>
diff --git a/dcmihandler.cpp b/dcmihandler.cpp
index 31bca0c..07f1b63 100644
--- a/dcmihandler.cpp
+++ b/dcmihandler.cpp
@@ -684,12 +684,12 @@
         // Optional Platform Attributes
         case DCMICapParameters::OptionalPlatAttributes:
         {
-            uint7_t powerMgmtDeviceSlaveAddress =
+            uint7_t powerMgmtDeviceTargetAddress =
                 data.value("PowerMgmtDeviceSlaveAddress", 0);
             uint4_t bmcChannelNumber = data.value("BMCChannelNumber", 0);
             uint4_t deviceRivision = data.value("DeviceRivision", 0);
-            payload.pack(powerMgmtDeviceSlaveAddress, reserved1, deviceRivision,
-                         bmcChannelNumber);
+            payload.pack(powerMgmtDeviceTargetAddress, reserved1,
+                         deviceRivision, bmcChannelNumber);
             break;
         }
         // Manageability Access Attributes