Remove SDBUSPP_REMOVE_DEPRECATED_NAMESPACE

Fix the code to support new sdbusplus error without
SDBUSPP_REMOVE_DEPRECATED_NAMESPACE.

Change-Id: I12713ec1757d3835e1acf07c7abf409ff97615e1
Signed-off-by: Willy Tu <wltu@google.com>
diff --git a/extensions/openpower-pels/pel_entry.cpp b/extensions/openpower-pels/pel_entry.cpp
index 3515128..89e9dd0 100644
--- a/extensions/openpower-pels/pel_entry.cpp
+++ b/extensions/openpower-pels/pel_entry.cpp
@@ -11,11 +11,11 @@
 
 bool PELEntry::managementSystemAck(bool value)
 {
-    auto current = sdbusplus::org::open_power::Logging::PEL::server::Entry::
+    auto current = sdbusplus::server::org::open_power::logging::pel::Entry::
         managementSystemAck();
     if (value != current)
     {
-        current = sdbusplus::org::open_power::Logging::PEL::server::Entry::
+        current = sdbusplus::server::org::open_power::logging::pel::Entry::
             managementSystemAck(value);
 
         Repository::LogID id{Repository::LogID::Obmc(getMyId())};