Without this compiles of 4.13 and later kernels fail.
Backport from https://github.com/cryptodev-linux/cryptodev-linux
Based on commit f0d69774afb27ffc62bf353465fba145e70cb85a
(From OE-Core rev: 317fd9814653ee22496dda63a02e628e8a16899b)
(From OE-Core rev: 8894f352fd1f2a087528808cc3dc52d7a5cc72bd)
Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>