[*] basic in-house cpp linting (#4039)

- add `#pragma once` to remainder files
- "correcter" defines (ANDROID), see https://groups.google.com/g/android-ndk/c/cf9_f1SLXls
- extra miscelly fixups

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4039
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: crueter <crueter@eden-emu.dev>

src/yuzu/data_dialog.h

@@ -1,8 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef DATA_DIALOG_H
-#define DATA_DIALOG_H
+#pragma once
 
 #include <QDialog>
 #include "frontend_common/data_manager.h"
@@ -47,5 +46,3 @@ private:
 
     std::optional<std::string> selectProfile();
 };
-
-#endif // DATA_DIALOG_H

src/yuzu/migration_dialog.h

@@ -1,8 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef MIGRATION_DIALOG_H
-#define MIGRATION_DIALOG_H
+#pragma once
 
 #include <QHBoxLayout>
 #include <QMessageBox>
@@ -29,5 +28,3 @@ private:
 
     QAbstractButton* m_clickedButton;
 };
-
-#endif // MIGRATION_DIALOG_H

src/yuzu/migration_worker.h

@@ -1,8 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef MIGRATION_WORKER_H
-#define MIGRATION_WORKER_H
+#pragma once
 
 #include <QObject>
 #include "common/fs/path_util.h"
@@ -73,5 +72,3 @@ private:
     MigrationStrategy strategy;
     QString success_text = tr("Data was migrated successfully.");
 };
-
-#endif // MIGRATION_WORKER_H

src/yuzu/ryujinx_dialog.h

@@ -1,8 +1,7 @@
 // SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
-#ifndef RYUJINX_DIALOG_H
-#define RYUJINX_DIALOG_H
+#pragma once
 
 #include <filesystem>
 #include <QDialog>
@@ -28,5 +27,3 @@ private:
     std::filesystem::path m_eden;
     std::filesystem::path m_ryu;
 };
-
-#endif // RYUJINX_DIALOG_H