[openmp][AIX] Add AIX to __kmp_set_stack_info() (#77421)

GitOrigin-RevId: dc03382d3e38c8028926b2b66eebf3ca98efc7d3
diff --git a/runtime/src/z_Linux_util.cpp b/runtime/src/z_Linux_util.cpp
index f01fa64..513ec65 100644
--- a/runtime/src/z_Linux_util.cpp
+++ b/runtime/src/z_Linux_util.cpp
@@ -422,7 +422,7 @@
 static kmp_int32 __kmp_set_stack_info(int gtid, kmp_info_t *th) {
   int stack_data;
 #if KMP_OS_LINUX || KMP_OS_DRAGONFLY || KMP_OS_FREEBSD || KMP_OS_NETBSD ||     \
-    KMP_OS_HURD || KMP_OS_SOLARIS
+    KMP_OS_HURD || KMP_OS_SOLARIS || KMP_OS_AIX
   pthread_attr_t attr;
   int status;
   size_t size = 0;