[gcc r14-5030] LoongArch: Define HAVE_AS_TLS to 0 if it's undefined [PR112299]

[Xi Ruoyao]

https://gcc.gnu.org/g:6bf2cebe2bf49919c78814cb447d3aa6e3550d89

commit r14-5030-g6bf2cebe2bf49919c78814cb447d3aa6e3550d89
Author: Xi Ruoyao <xry111@xry111.site>
Date:   Mon Oct 30 19:39:27 2023 +0800

    LoongArch: Define HAVE_AS_TLS to 0 if it's undefined [PR112299]
    
    Now loongarch.md uses HAVE_AS_TLS, we need this to fix the failure
    building a cross compiler if the cross assembler is not installed yet.
    
    gcc/ChangeLog:
    
            PR target/112299
            * config/loongarch/loongarch-opts.h (HAVE_AS_TLS): Define to 0
            if not defined yet.

Diff:
---
 gcc/config/loongarch/loongarch-opts.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gcc/config/loongarch/loongarch-opts.h b/gcc/config/loongarch/loongarch-opts.h
index 2756939b05db..f204828015e1 100644
--- a/gcc/config/loongarch/loongarch-opts.h
+++ b/gcc/config/loongarch/loongarch-opts.h
@@ -101,4 +101,8 @@ loongarch_update_gcc_opt_status (struct loongarch_target *target,
 #define HAVE_AS_MRELAX_OPTION 0
 #endif
 
+#ifndef HAVE_AS_TLS
+#define HAVE_AS_TLS 0
+#endif
+
 #endif /* LOONGARCH_OPTS_H */