crypto: arm - AES in ECB/CBC/CTR/XTS modes using ARMv8 Crypto Extensions

This implements the ECB, CBC, CTR and XTS asynchronous block ciphers
using the AArch32 versions of the ARMv8 Crypto Extensions for AES.

Change-Id: If82737beaf6caa9cbc75b52d6bdd8f3beef7e17f
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Git-commit: 86464859cc77ecfd989ad5c912bef167b1128b0b
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git


[neeraju@codeaurora.org: resolve trivial merge conflicts]
Signed-off-by: Neeraj Upadhyay <neeraju@codeaurora.org>