sdbusplus: use shorter type aliases

The sdbusplus headers provide shortened aliases for many types.
Switch to using them to provide better code clarity and shorter
lines.  Possible replacements are for:
  * bus_t
  * exception_t
  * manager_t
  * match_t
  * message_t
  * object_t
  * slot_t

Change-Id: I47fca4c5cc35086034911f026c2c48d28136db5f
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/oem/ibm/libpldmresponder/bios_oem_ibm.cpp b/oem/ibm/libpldmresponder/bios_oem_ibm.cpp
index 308eac1..54b90fd 100644
--- a/oem/ibm/libpldmresponder/bios_oem_ibm.cpp
+++ b/oem/ibm/libpldmresponder/bios_oem_ibm.cpp
@@ -63,7 +63,7 @@
  *  @param[in] msg - Data associated with subscribed signal
  */
 void pldm::responder::oem::ibm::bios::Handler::ibmCompatibleAddedCallback(
-    sdbusplus::message::message& msg)
+    sdbusplus::message_t& msg)
 {
     sdbusplus::message::object_path path;