fix ppc build errs as well

externals/powah/data2code.c

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>

externals/powah/powah_emit.hpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 #pragma once
 
 #undef NDEBUG

externals/powah/powah_gen_base.hpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // this file is autogenerated DO NOT MODIFY
 #pragma once
 void ADD(GPR const rt, GPR const ra, GPR const rb) { emit_XO(0x7c000214, rt, ra, rb, false, false); }