Update the registered IPMI method name

Update registered IPMI method names to use `Lower Camel Case`.

Change-Id: I5539771c4ba8567f6cdb22aa3c8df58db5e883f2
Signed-off-by: George Liu <liuxiwei@ieisystem.com>
diff --git a/chassishandler.cpp b/chassishandler.cpp
index fbb8561..3b4c860 100644
--- a/chassishandler.cpp
+++ b/chassishandler.cpp
@@ -67,7 +67,7 @@
 }
 } // namespace ipmi
 
-void register_netfn_chassis_functions() __attribute__((constructor));
+void registerNetFnChassisFunctions() __attribute__((constructor));
 
 // Host settings in dbus
 // Service name should be referenced by connection name got via object mapper
@@ -2337,7 +2337,7 @@
     return ipmi::responseSuccess();
 }
 
-void register_netfn_chassis_functions()
+void registerNetFnChassisFunctions()
 {
     createIdentifyTimer();