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/sensorhandler.cpp b/sensorhandler.cpp
index 961b236..2da4c08 100644
--- a/sensorhandler.cpp
+++ b/sensorhandler.cpp
@@ -42,7 +42,7 @@
 using InternalFailure =
     sdbusplus::error::xyz::openbmc_project::common::InternalFailure;
 
-void register_netfn_sen_functions() __attribute__((constructor));
+void registerNetFnSenFunctions() __attribute__((constructor));
 
 struct sensorTypemap_t
 {
@@ -1526,7 +1526,7 @@
     return IPMI_CC_OK;
 }
 
-void register_netfn_sen_functions()
+void registerNetFnSenFunctions()
 {
     // Handlers with dbus-sdr handler implementation.
     // Do not register the hander if it dynamic sensors stack is used.