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: Ic0fe1ed7e19cf114b8666d49d4d670c7d9ec595d
diff --git a/power-sequencer/ucd90160.hpp b/power-sequencer/ucd90160.hpp
index b66bb82..6ad85f2 100644
--- a/power-sequencer/ucd90160.hpp
+++ b/power-sequencer/ucd90160.hpp
@@ -43,7 +43,7 @@
      * @param[in] instance - the device instance number
      * @param[in] bus - D-Bus bus object
      */
-    UCD90160(size_t instance, sdbusplus::bus::bus& bus);
+    UCD90160(size_t instance, sdbusplus::bus_t& bus);
 
     /**
      * Analyzes the device for errors when the device is
@@ -301,7 +301,7 @@
     /**
      * The D-Bus bus object
      */
-    sdbusplus::bus::bus& bus;
+    sdbusplus::bus_t& bus;
 
     /**
      * Map of device instance to the instance specific data