Add missing syscall nrs. according to more recent Linux kernels

This change covers arm, aarch64, mips. Others to follow?

The change was prompted by QEMU warning about a syscall 384 (get_random())
with Debian armhf binaries (ARMv7).

Signed-off-by: Johan Ouwerkerk <jm.ouwerkerk@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/linux-user/aarch64/syscall_nr.h b/linux-user/aarch64/syscall_nr.h
index 743255d..74f4275 100644
--- a/linux-user/aarch64/syscall_nr.h
+++ b/linux-user/aarch64/syscall_nr.h
@@ -262,6 +262,19 @@
 #define TARGET_NR_process_vm_writev 271
 #define TARGET_NR_kcmp 272
 #define TARGET_NR_finit_module 273
+
+#define TARGET_NR_sched_setattr 274
+#define TARGET_NR_sched_getattr 275
+#define TARGET_NR_renameat2 276
+#define TARGET_NR_seccomp 277
+#define TARGET_NR_getrandom 278
+#define TARGET_NR_memfd_create 279
+#define TARGET_NR_bpf 280
+#define TARGET_NR_execveat 281
+#define TARGET_NR_userfaultfd 282
+#define TARGET_NR_membarrier 283
+#define TARGET_NR_mlock2 284
+
 #define TARGET_NR_open 1024
 #define TARGET_NR_link 1025
 #define TARGET_NR_unlink 1026