style: member functions should be lower camel

Rename member functions to be lower camel instead of snake case.

Change-Id: Ib227fd3dadb6d9607290277205223a4324cd4ce5
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/dbus/dbuspassive.hpp b/dbus/dbuspassive.hpp
index 71ef339..801722d 100644
--- a/dbus/dbuspassive.hpp
+++ b/dbus/dbuspassive.hpp
@@ -34,7 +34,7 @@
 {
   public:
     static std::unique_ptr<ReadInterface>
-        CreateDbusPassive(sdbusplus::bus::bus& bus, const std::string& type,
+        createDbusPassive(sdbusplus::bus::bus& bus, const std::string& type,
                           const std::string& id, DbusHelperInterface* helper);
 
     DbusPassive(sdbusplus::bus::bus& bus, const std::string& type,
@@ -46,7 +46,7 @@
     void setValue(double value);
     void setFailed(bool value);
     int64_t getScale(void);
-    std::string getId(void);
+    std::string getID(void);
 
   private:
     sdbusplus::bus::bus& _bus;