Add GOST/IETF Streebog hash function (GOST R 34.11-2012, RFC 6986)
generic hash transformation with appropriate testmgr and tcrypt
tests and vectors.

Streebog Hash Function (GOST R 34.11-2012, RFC 6986) is one of the Russian
cryptographic standard algorithms (called GOST algorithms).

References:
  https://tc26.ru/upload/iblock/fed/feddbb4d26b685903faa2ba11aea43f6.pdf
  https://tools.ietf.org/html/rfc6986

Tested using testmgr and tcrypt on x86_64, arm, arm64, and s390x on qemu.

Changes from v1:
- Fix of big-endian problem in add512.
- More architectures are tested, including big-endian and 32-bit.

Vitaly Chikunov (2):
  crypto: streebog - add Streebog hash function
  crypto: streebog - add Streebog test vectors

 crypto/Kconfig            |   12 +
 crypto/Makefile           |    1 +
 crypto/streebog_generic.c | 1142 +++++++++++++++++++++++++++++++++++++++++++++
 crypto/tcrypt.c           |   27 ++
 crypto/testmgr.c          |   12 +
 crypto/testmgr.h          |   71 +++
 include/crypto/streebog.h |   34 ++
 7 files changed, 1299 insertions(+)
 create mode 100644 crypto/streebog_generic.c
 create mode 100644 include/crypto/streebog.h

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2.11.0