规范化libc.map.txt文件

在libc.map.txt中在global中剔除在local中出现的选项，将local置为*，补充global缺失的选项

Issue: https://gitee.com/openharmony/third_party_musl/issues/I70WI9
Test: 编译构建libc
Signed-off-by: zzulilyw <378305181@qq.com>

libc.map.txt

@@ -1961,7 +1961,7 @@
     ynf;
     dlopen_ns_ext;
     init_cfi_shadow;
-    # map_dso_to_cfi_shadow;
+    map_dso_to_cfi_shadow;
     unmap_dso_from_cfi_shadow;
     __cfi_slowpath;
     __cfi_slowpath_diag;