crypto: create generic version of ablk_helper

Create a generic version of ablk_helper so it can be reused
by other architectures.

Acked-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Conflicts:
	crypto/Kconfig
	crypto/Makefile
crypto: ablk_helper - Replace memcpy with struct assignment

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master
head:   48e6dc1b2a1ad8186d48968d5018912bdacac744
commit: a62b01cd6cc1feb5e80d64d6937c291473ed82cb [20/24] crypto: create generic version of ablk_helper

coccinelle warnings: (new ones prefixed by >>)

>> crypto/ablk_helper.c:97:2-8: Replace memcpy with struct assignment
>> crypto/ablk_helper.c:78:2-8: Replace memcpy with struct assignment

Please consider folding the attached diff :-)

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
crypto: missing parameters
crypto: missing functions