crypto: x86/aesni - convert to use skcipher SIMD bulk registration

Convert the AES-NI glue code to use simd_register_skciphers_compat() to
create SIMD wrappers for all the internal skcipher algorithms at once,
rather than wrapping each one individually.  This simplifies the code.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>