crypto: simd - Add simd skcipher helper

This patch adds the simd skcipher helper which is meant to be
a replacement for ablk helper.  It replaces the underlying blkcipher
interface with skcipher, and also presents the top-level algorithm
as an skcipher.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/Makefile b/crypto/Makefile
index 82ffeee..a05590e 100644
--- a/crypto/Makefile
+++ b/crypto/Makefile
@@ -142,3 +142,5 @@
 obj-$(CONFIG_ASYMMETRIC_KEY_TYPE) += asymmetric_keys/
 obj-$(CONFIG_CRYPTO_HASH_INFO) += hash_info.o
 obj-$(CONFIG_CRYPTO_ABLK_HELPER) += ablk_helper.o
+crypto_simd-y := simd.o
+obj-$(CONFIG_CRYPTO_SIMD) += crypto_simd.o