[glibc] s390: Fix build for -march=z13

[glibc] s390: Fix build for -march=z13

[Adhemerval Zanella]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=8b014a1b1f7aee1e3348db108aeea396359d481e

commit 8b014a1b1f7aee1e3348db108aeea396359d481e
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Mon Feb 20 11:18:08 2023 -0300

    s390: Fix build for -march=z13
    
    It fixes the build after 7ea510127e2067e and 22999b2f0fb62.
    
    Checked with build for s390x-linux-gnu with -march=z13.
    
    Reviewed-by: Arjun Shankar <arjun@redhat.com>

Diff:
---
 sysdeps/s390/memrchr-vx.S   | 1 +
 sysdeps/s390/strchrnul-vx.S | 1 +
 2 files changed, 2 insertions(+)

diff --git a/sysdeps/s390/memrchr-vx.S b/sysdeps/s390/memrchr-vx.S
index c6c3168668..4080dccfbc 100644
--- a/sysdeps/s390/memrchr-vx.S
+++ b/sysdeps/s390/memrchr-vx.S
@@ -161,6 +161,7 @@ ENTRY(MEMRCHR_Z13)
 END(MEMRCHR_Z13)
 
 # if ! HAVE_MEMRCHR_IFUNC
+libc_hidden_def (__memrchr)
 strong_alias (MEMRCHR_Z13, __memrchr)
 weak_alias (__memrchr, memrchr)
 # endif
diff --git a/sysdeps/s390/strchrnul-vx.S b/sysdeps/s390/strchrnul-vx.S
index 07f39426b7..b705979481 100644
--- a/sysdeps/s390/strchrnul-vx.S
+++ b/sysdeps/s390/strchrnul-vx.S
@@ -94,6 +94,7 @@ ENTRY(STRCHRNUL_Z13)
 END(STRCHRNUL_Z13)
 
 # if ! HAVE_STRCHRNUL_IFUNC
+libc_hidden_def (__strchrnul)
 strong_alias (STRCHRNUL_Z13, __strchrnul)
 weak_alias (__strchrnul, strchrnul)
 # endif