BACKPORT: 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.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry-picked from commit 86464859cc77ecfd989ad5c912bef167b1128b0b)
Change-Id: I5d666b976345633243af9bfb690118895a319249
Signed-off-by: Eric Biggers <ebiggers@google.com>