kXNotification - adding more

- Added more kXNotification ids
- Added missing Notification to XMPCreateTitlePlaylist

src/xenia/kernel/xam/xam_ui.cc

@@ -606,8 +606,8 @@ DECLARE_XAM_EXPORT1(XamShowCommunitySessionsUI, kNone, kStub);
 dword_result_t XamSetDashContext_entry(dword_t value,
                                        const ppc_context_t& ctx) {
   ctx->kernel_state->dash_context_ = value;
-  kernel_state()->BroadcastNotification(
-      kXNotificationDvdDriveUnknownDashContext, 0);
+  kernel_state()->BroadcastNotification(kXNotificationSystemDashContextChanged,
+                                        0);
   return 0;
 }