[libc] Fix list of public headers usable on aarch64.

GitOrigin-RevId: ec5a782c10aee9393e712501e67ea10b5812dee2
diff --git a/config/linux/aarch64/headers.txt b/config/linux/aarch64/headers.txt
index f784070..eb9dfa2 100644
--- a/config/linux/aarch64/headers.txt
+++ b/config/linux/aarch64/headers.txt
@@ -1,6 +1,8 @@
 set(TARGET_PUBLIC_HEADERS
+    libc.include.ctype
     libc.include.errno
+    libc.include.fenv
     libc.include.math
     libc.include.stdlib
-    libc.include.sys_syscall
+    libc.include.string
 )