[Kernel] Prevent real XAM from initialization while loading dashboard

src/xenia/kernel/kernel_state.cc

@@ -838,7 +838,7 @@ void KernelState::OnThreadExecute(XThread* thread) {
     if (user_module->is_dll_module() && user_module->entry_point()) {
       uint64_t args[] = {
           user_module->handle(),
-          user_module->is_attached_
+          user_module->is_attached()
               ? static_cast<uint64_t>(2)   // DLL_THREAD_ATTACH - Used to call
                                            // DLL for each thread created.
               : static_cast<uint64_t>(1),  // DLL_PROCESS_ATTACH - Used only

src/xenia/kernel/user_module.h

@@ -66,6 +66,13 @@ class UserModule : public XModule {
 
   bool is_executable() const { return processor_module_->is_executable(); }
   bool is_dll_module() const { return is_dll_module_; }
+  bool is_attached() const {
+    // Special case for skipping real XAM initialization as it will fail.
+    if (name_ == "xam") {
+      return true;
+    }
+    return is_attached_;
+  }
 
   uint32_t entry_point() const { return entry_point_; }
   uint32_t stack_size() const { return stack_size_; }