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

@@ -1972,6 +1972,7 @@
     GetSystemCommitId;
     mallopt;
     TestParameterReaderPerformance;
+    reallocarray;
   local:
     *;
 };