Really add adjtimex(2), and add clock_adjtime(2) too.

Change-Id: I81fde2ec9fdf787bb19a784ad13df92d33a4f852
diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index c859d81..dd0b9c0 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -1250,6 +1250,8 @@
     __pwrite_chk;
     __pwrite64_chk;
     __write_chk;
+    adjtimex;
+    clock_adjtime;
     fgetpos64;
     fileno_unlocked;
     fopen64;