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/phal_service_actions.hpp b/extensions/openpower-pels/phal_service_actions.hpp
index 8d8652c..8032663 100644
--- a/extensions/openpower-pels/phal_service_actions.hpp
+++ b/extensions/openpower-pels/phal_service_actions.hpp
@@ -13,7 +13,7 @@
 {
 
 using EntrySeverity =
-    sdbusplus::xyz::openbmc_project::HardwareIsolation::server::Entry::Type;
+    sdbusplus::server::xyz::openbmc_project::hardware_isolation::Entry::Type;
 
 /**
  * @brief Helper function to create service actions in the PEL