crypto: sha256 - Switch to shash

This patch changes sha256 and sha224 to the new shash interface.

Signed-off-by: Adrian-Ken Rueegsegger <ken@codelabs.ch>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 989304c..3d04fa8 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -357,7 +357,7 @@
 
 config CRYPTO_SHA256
 	tristate "SHA224 and SHA256 digest algorithm"
-	select CRYPTO_ALGAPI
+	select CRYPTO_HASH
 	help
 	  SHA256 secure hash standard (DFIPS 180-2).