add personality() system call.

Change-Id: Ie899def8ea1d705930ed83adae1343c1353e7c57
diff --git a/libc/arch-arm/syscalls.mk b/libc/arch-arm/syscalls.mk
index e6c84f6..861cabf 100644
--- a/libc/arch-arm/syscalls.mk
+++ b/libc/arch-arm/syscalls.mk
@@ -169,6 +169,7 @@
 syscall_src += arch-arm/syscalls/delete_module.S
 syscall_src += arch-arm/syscalls/klogctl.S
 syscall_src += arch-arm/syscalls/sysinfo.S
+syscall_src += arch-arm/syscalls/personality.S
 syscall_src += arch-arm/syscalls/futex.S
 syscall_src += arch-arm/syscalls/epoll_create.S
 syscall_src += arch-arm/syscalls/epoll_ctl.S