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: Ie85ba085aedffd41bcb6310ee57adb86cb68273d
diff --git a/lpcsnoop/snoop.hpp b/lpcsnoop/snoop.hpp
index dab3334..dfa11de 100644
--- a/lpcsnoop/snoop.hpp
+++ b/lpcsnoop/snoop.hpp
@@ -10,7 +10,7 @@
 constexpr char snoopDbus[] = "xyz.openbmc_project.State.Boot.Raw";
 
 template <typename... T>
-using ServerObject = typename sdbusplus::server::object::object<T...>;
+using ServerObject = typename sdbusplus::server::object_t<T...>;
 using PostInterface = sdbusplus::xyz::openbmc_project::State::Boot::server::Raw;
 using PostObject = ServerObject<PostInterface>;
 using primary_post_code_t = uint64_t;
@@ -20,7 +20,7 @@
 class PostReporter : public PostObject
 {
   public:
-    PostReporter(sdbusplus::bus::bus& bus, const char* objPath, bool defer) :
+    PostReporter(sdbusplus::bus_t& bus, const char* objPath, bool defer) :
         PostObject(bus, objPath,
                    defer ? PostObject::action::defer_emit
                          : PostObject::action::emit_object_added)
diff --git a/lpcsnoop/snoop_listen.hpp b/lpcsnoop/snoop_listen.hpp
index 292745b..3a3682b 100644
--- a/lpcsnoop/snoop_listen.hpp
+++ b/lpcsnoop/snoop_listen.hpp
@@ -35,21 +35,21 @@
 
 class SnoopListen
 {
-    using message_handler_t = std::function<void(sdbusplus::message::message&)>;
+    using message_handler_t = std::function<void(sdbusplus::message_t&)>;
     using postcode_handler_t = std::function<void(FILE*, postcode_t)>;
 
   public:
-    SnoopListen(sdbusplus::bus::bus& busIn, sd_bus_message_handler_t handler) :
+    SnoopListen(sdbusplus::bus_t& busIn, sd_bus_message_handler_t handler) :
         signal(busIn, GetMatchRule().c_str(), handler, this)
     {
     }
 
-    SnoopListen(sdbusplus::bus::bus& busIn, message_handler_t handler) :
+    SnoopListen(sdbusplus::bus_t& busIn, message_handler_t handler) :
         signal(busIn, GetMatchRule(), handler)
     {
     }
 
-    SnoopListen(sdbusplus::bus::bus& busIn, postcode_handler_t handler,
+    SnoopListen(sdbusplus::bus_t& busIn, postcode_handler_t handler,
                 FILE* f = NULL) :
         SnoopListen(busIn, std::bind(defaultMessageHandler, handler, f,
                                      std::placeholders::_1))
@@ -71,7 +71,7 @@
      * DBus path, and calls the given postcode_handler on each value received.
      */
     static void defaultMessageHandler(postcode_handler_t& handler, FILE* f,
-                                      sdbusplus::message::message& m)
+                                      sdbusplus::message_t& m)
     {
         std::string messageBusName;
         std::map<std::string, std::variant<postcode_t>> messageData;