devel/valgrind: patch to enable aarch64

["Periklis Akritidis" <periklis%akritidis.org@localhost>]

I've made a local change to build Valgrind on aarch64. Sharing here the diff for the Makefile and hoping for the best:

devel/valgrind$ cvs diff -u Makefile 
Index: Makefile
===================================================================
RCS file: /cvsroot/pkgsrc/devel/valgrind/Makefile,v
retrieving revision 1.38
diff -u -r1.38 Makefile
--- Makefile    11 Aug 2023 08:45:47 -0000      1.38
+++ Makefile    4 Dec 2024 04:35:35 -0000
@@ -18,7 +18,7 @@
 ONLY_FOR_PLATFORM+=    Darwin-[0-9].*-i386 Darwin-[0-9].*-x86_64
 ONLY_FOR_PLATFORM+=    Darwin-1[0-7].*-i386 Darwin-1[0-7].*-x86_64
 ONLY_FOR_PLATFORM+=    FreeBSD-*-x86_64 FreeBSD-*-i386
-ONLY_FOR_PLATFORM+=    Linux-*-x86_64 Linux-*-i386 Linux-*-arm*
+ONLY_FOR_PLATFORM+=    Linux-*-x86_64 Linux-*-i386 Linux-*-arm* Linux-*-aarch64
 ONLY_FOR_PLATFORM+=    SunOS-*-i386 SunOS-*-x86_64
 
 USE_TOOLS+=            gmake perl:run
@@ -37,6 +37,10 @@
 PLIST_SUBST+=          VGCONF_ARCH_PRI=arm
 .endif
 
+.if ${MACHINE_ARCH} == "aarch64"
+PLIST_SUBST+=          VGCONF_ARCH_PRI=arm64
+.endif
+
 .if ${MACHINE_ARCH} == "i386"
 PLIST_SUBST+=          VGCONF_ARCH_PRI=x86
 .endif