Update kernel headers to v3.18.3.

Bug: 19127803
Change-Id: I67fa0832322ddd0032d909476047578be052bcf2
diff --git a/libc/kernel/uapi/asm-arm/asm/unistd.h b/libc/kernel/uapi/asm-arm/asm/unistd.h
index c93934a..fbea196 100644
--- a/libc/kernel/uapi/asm-arm/asm/unistd.h
+++ b/libc/kernel/uapi/asm-arm/asm/unistd.h
@@ -459,6 +459,11 @@
 #define __NR_sched_setattr (__NR_SYSCALL_BASE+380)
 #define __NR_sched_getattr (__NR_SYSCALL_BASE+381)
 #define __NR_renameat2 (__NR_SYSCALL_BASE+382)
+#define __NR_seccomp (__NR_SYSCALL_BASE+383)
+/* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
+#define __NR_getrandom (__NR_SYSCALL_BASE+384)
+#define __NR_memfd_create (__NR_SYSCALL_BASE+385)
+#define __NR_bpf (__NR_SYSCALL_BASE+386)
 #define __ARM_NR_BASE (__NR_SYSCALL_BASE+0x0f0000)
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define __ARM_NR_breakpoint (__ARM_NR_BASE+1)