Patches attached.

Szabolcs Nagy (10):
  netinet/tcp.h: update tcp_info for linux v5.5
  add pidfd_getfd and openat2 syscall numbers from linux v5.6
  netinet/in.h: add IPPROTO_ macros from linux v5.6
  netinet/tcp.h: update for linux v5.6
  netinet/udp.h: add TCP_ENCAP_ESPINTCP from linux v5.6
  sys/prctl.h: add PR_{SET,GET}_IO_FLUSHER from linux v5.6
  sys/random.h: add GRND_INSECURE from linux v5.6
  sched.h: add CLONE_NEWTIME from linux v5.6
  aarch64: add HWCAP2_ macros from linux v5.3
  aarch64: add new HWCAP2_ macros from linux v5.6

 arch/aarch64/bits/hwcap.h         | 10 ++++++++++
 arch/aarch64/bits/syscall.h.in    |  2 ++
 arch/arm/bits/syscall.h.in        |  2 ++
 arch/i386/bits/syscall.h.in       |  2 ++
 arch/m68k/bits/syscall.h.in       |  3 +++
 arch/microblaze/bits/syscall.h.in |  2 ++
 arch/mips/bits/syscall.h.in       |  2 ++
 arch/mips64/bits/syscall.h.in     |  2 ++
 arch/mipsn32/bits/syscall.h.in    |  2 ++
 arch/or1k/bits/syscall.h.in       |  2 ++
 arch/powerpc/bits/syscall.h.in    |  2 ++
 arch/powerpc64/bits/syscall.h.in  |  2 ++
 arch/riscv64/bits/syscall.h.in    |  2 ++
 arch/s390x/bits/syscall.h.in      |  2 ++
 arch/sh/bits/syscall.h.in         |  3 +++
 arch/x32/bits/syscall.h.in        |  2 ++
 arch/x86_64/bits/syscall.h.in     |  2 ++
 include/netinet/in.h              |  4 +++-
 include/netinet/tcp.h             | 15 ++++++++++++---
 include/netinet/udp.h             |  1 +
 include/sched.h                   |  1 +
 include/sys/prctl.h               |  3 +++
 include/sys/random.h              |  1 +
 23 files changed, 65 insertions(+), 4 deletions(-)

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2.24.1