crypto: sha256_generic - Switch to the generic lib/crypto/sha256.c lib code

Drop the duplicate generic sha256 (and sha224) implementation from
crypto/sha256_generic.c and use the implementation from
lib/crypto/sha256.c instead.

"diff -u lib/crypto/sha256.c sha256_generic.c" shows that the core
sha256_transform function from both implementations is identical and
the other code is functionally identical too.

Suggested-by: Eric Biggers <ebiggers@kernel.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 0 deletions

diff --git a/crypto/Kconfig b/crypto/Kconfig
index e96b321b51af..ad86463de715 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -855,6 +855,7 @@ config CRYPTO_LIB_SHA256
 config CRYPTO_SHA256
         tristate "SHA224 and SHA256 digest algorithm"
         select CRYPTO_HASH
+        select CRYPTO_LIB_SHA256
         help
           SHA256 secure hash standard (DFIPS 180-2).