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

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ief05bd757cffb1453e058a719ee4b060861752e7
diff --git a/phosphor-power-sequencer/src/ucd90320_monitor.hpp b/phosphor-power-sequencer/src/ucd90320_monitor.hpp
index 59e784c..9bcbf77 100644
--- a/phosphor-power-sequencer/src/ucd90320_monitor.hpp
+++ b/phosphor-power-sequencer/src/ucd90320_monitor.hpp
@@ -47,14 +47,14 @@
      * @param i2cBus The bus number of the power sequencer device
      * @param i2cAddress The I2C address of the power sequencer device
      */
-    UCD90320Monitor(sdbusplus::bus::bus& bus, std::uint8_t i2cBus,
+    UCD90320Monitor(sdbusplus::bus_t& bus, std::uint8_t i2cBus,
                     std::uint16_t i2cAddress);
 
     /**
      * Callback function to handle interfacesAdded D-Bus signals
      * @param msg Expanded sdbusplus message data
      */
-    void interfacesAddedHandler(sdbusplus::message::message& msg);
+    void interfacesAddedHandler(sdbusplus::message_t& msg);
 
     /** @copydoc PowerSequencerMonitor::onFailure() */
     void onFailure(bool timeout, const std::string& powerSupplyError) override;