[glibc/arm/morello/main] aarch64: don't build wordcopy

[Szabolcs Nagy <nsz@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=9ed39f584efdd5be1fcf6551219d3b6c53c15e80

commit 9ed39f584efdd5be1fcf6551219d3b6c53c15e80
Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date:   Thu Jul 28 14:29:19 2022 +0100

    aarch64: don't build wordcopy
    
    Use an empty wordcopy.c to avoid building the generic one.
    It does not seem to be used anywhere.

Diff:
---
 sysdeps/aarch64/wordcopy.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/sysdeps/aarch64/wordcopy.c b/sysdeps/aarch64/wordcopy.c
new file mode 100644
index 0000000000..f1a5d9dbca
--- /dev/null
+++ b/sysdeps/aarch64/wordcopy.c
@@ -0,0 +1,17 @@
+/* Empty file: AArch64 does not use wordcopy functions.
+   Copyright (C) 2022 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */