conf change: sensors: read and write path rename

Rename the readpath and writepath for camelcase styling to make all
configuration variables consistent.

Change-Id: I33f475075c8f40cd2029a5c0bfda950846cd5d44
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/sensors/builderconfig.cpp b/sensors/builderconfig.cpp
index 0c6ed68..5aa18bc 100644
--- a/sensors/builderconfig.cpp
+++ b/sensors/builderconfig.cpp
@@ -75,8 +75,8 @@
              */
             name = sensor.lookup("name").c_str();
             thisOne.type = sensor.lookup("type").c_str();
-            thisOne.readpath = sensor.lookup("readpath").c_str();
-            thisOne.writepath = sensor.lookup("writepath").c_str();
+            thisOne.readPath = sensor.lookup("readPath").c_str();
+            thisOne.writePath = sensor.lookup("writePath").c_str();
 
             /* TODO: Document why this is wonky.  The library probably doesn't
              * like int64_t