psu-ng: Rename supportedConfIfaceAdded

Rename the supportConfIfaceAdded function to entityMangerIfaceAdded, as
it will be used to handle the SupporteConfiguration interface being
added, as well as the IBMCFFPSConnecor interface.

Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
Change-Id: Ib2a1564b5467153d8a960a1b39b2df4afa1147f8
diff --git a/phosphor-power-supply/psu_manager.cpp b/phosphor-power-supply/psu_manager.cpp
index b5e07c3..ffab79a 100644
--- a/phosphor-power-supply/psu_manager.cpp
+++ b/phosphor-power-supply/psu_manager.cpp
@@ -30,7 +30,7 @@
         sdbusplus::bus::match::rules::interfacesAdded() +
             sdbusplus::bus::match::rules::sender(
                 "xyz.openbmc_project.EntityManager"),
-        std::bind(&PSUManager::supportedConfIfaceAdded, this,
+        std::bind(&PSUManager::entityManagerIfaceAdded, this,
                   std::placeholders::_1));
     getSystemProperties();
 
@@ -124,7 +124,7 @@
     }
 }
 
-void PSUManager::supportedConfIfaceAdded(sdbusplus::message::message& msg)
+void PSUManager::entityManagerIfaceAdded(sdbusplus::message::message& msg)
 {
     try
     {