[XAM] - Replacing Unk

- Replacing unk parameters
- Naming unk xmp calls
- Added missing xmp structs
- Added missing messenger structs
- Added missing XamProfileCreate related structs

src/xenia/kernel/xam/xam_user.cc

@@ -65,7 +65,7 @@ X_HRESULT_result_t XamUserGetXUID_entry(dword_t user_index, dword_t type_mask,
 DECLARE_XAM_EXPORT1(XamUserGetXUID, kUserProfiles, kImplemented);
 
 dword_result_t XamUserGetIndexFromXUID_entry(qword_t xuid, dword_t flags,
-                                             pointer_t<uint32_t> index) {
+                                             lpdword_t index) {
   if (!index) {
     return X_E_INVALIDARG;
   }