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: Idab99ed8fdb9bdf5cc0e130d576f55d256df9cce
diff --git a/writefrudata.hpp b/writefrudata.hpp
index 0628cdf..af3ba1c 100644
--- a/writefrudata.hpp
+++ b/writefrudata.hpp
@@ -51,6 +51,6 @@
  * @param[in] bmcOnlyFru - If a particular area accessible only by BMC.
  */
 int validateFRUArea(const uint8_t fruid, const char* fruFilename,
-                    sdbusplus::bus::bus& bus, const bool bmcOnlyFru);
+                    sdbusplus::bus_t& bus, const bool bmcOnlyFru);
 
 #endif