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

Change-Id: I81fde2ec9fdf787bb19a784ad13df92d33a4f852
diff --git a/libc/arch-mips/syscalls/clock_adjtime.S b/libc/arch-mips/syscalls/clock_adjtime.S
new file mode 100644
index 0000000..f8a4ce2
--- /dev/null
+++ b/libc/arch-mips/syscalls/clock_adjtime.S
@@ -0,0 +1,19 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(clock_adjtime)
+    .set noreorder
+    .cpload t9
+    li v0, __NR_clock_adjtime
+    syscall
+    bnez a3, 1f
+    move a0, v0
+    j ra
+    nop
+1:
+    la t9,__set_errno_internal
+    j t9
+    nop
+    .set reorder
+END(clock_adjtime)