devkitPPC: add arm64 macOS patch

dkppc/patches/gcc-11.2.0.patch

@@ -10,6 +10,68 @@ index 4b937306ad0..bfd0375bd60 100644
      gcn)	thread_header=config/gcn/gthr-gcn.h ;;
      lynx)	thread_header=config/gthr-lynx.h ;;
      mipssde)	thread_header=config/mips/gthr-mipssde.h ;;
+diff --git a/gcc/config.host b/gcc/config.host
+index 0a02c33cc80..38f7adc655e 100644
+--- a/gcc/config.host
++++ b/gcc/config.host
+@@ -251,6 +251,10 @@ case ${host} in
+     host_extra_gcc_objs="${host_extra_gcc_objs} driver-mingw32.o"
+     host_lto_plugin_soname=liblto_plugin.dll
+     ;;
++  aarch64-*-darwin*)
++    out_host_hook_obj="${out_host_hook_obj} host-aarch64-darwin.o"
++    host_xmake_file="${host_xmake_file} aarch64/x-darwin"
++    ;;
+   i[34567]86-*-darwin* | x86_64-*-darwin*)
+     out_host_hook_obj="${out_host_hook_obj} host-i386-darwin.o"
+     host_xmake_file="${host_xmake_file} i386/x-darwin"
+diff --git a/gcc/config/aarch64/host-aarch64-darwin.c b/gcc/config/aarch64/host-aarch64-darwin.c
+new file mode 100644
+index 00000000000..92c38b0b9db
+--- /dev/null
++++ b/gcc/config/aarch64/host-aarch64-darwin.c
+@@ -0,0 +1,32 @@
++/* i386-darwin host-specific hook definitions.
++   Copyright (C) 2003-2021 Free Software Foundation, Inc.
++
++This file is part of GCC.
++
++GCC is free software; you can redistribute it and/or modify it under
++the terms of the GNU General Public License as published by the Free
++Software Foundation; either version 3, or (at your option) any later
++version.
++
++GCC is distributed in the hope that it will be useful, but WITHOUT ANY
++WARRANTY; without even the implied warranty of MERCHANTABILITY or
++FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
++for more details.
++
++You should have received a copy of the GNU General Public License
++along with GCC; see the file COPYING3.  If not see
++<http://www.gnu.org/licenses/>.  */
++
++#define IN_TARGET_CODE 1
++
++#include "config.h"
++#include "system.h"
++#include "coretypes.h"
++#include "hosthooks.h"
++#include "hosthooks-def.h"
++#include "config/host-darwin.h"
++
++/* Darwin doesn't do anything special for aarch64 hosts; this file exists just
++   to include config/host-darwin.h.  */
++
++const struct host_hooks host_hooks = HOST_HOOKS_INITIALIZER;
+diff --git a/gcc/config/aarch64/x-darwin b/gcc/config/aarch64/x-darwin
+new file mode 100644
+index 00000000000..6d788d5e89c
+--- /dev/null
++++ b/gcc/config/aarch64/x-darwin
+@@ -0,0 +1,3 @@
++host-aarch64-darwin.o : $(srcdir)/config/aarch64/host-aarch64-darwin.c
++	$(COMPILE) $<
++	$(POSTCOMPILE)
 diff --git a/gcc/config/i386/host-mingw32.c b/gcc/config/i386/host-mingw32.c
 index 360a280b23a..2c03947999a 100644
 --- a/gcc/config/i386/host-mingw32.c