[PATCH] s390: sha256 support

Add support for the hardware accelerated sha256 crypto algorithm.

Signed-off-by: Jan Glauber <jan.glauber@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/crypto/Kconfig b/crypto/Kconfig
index 85af571..9fdab74 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -44,6 +44,7 @@
 	tristate "SHA1 digest algorithm (s390)"
 	depends on CRYPTO && ARCH_S390
 	help
+	  This is the s390 hardware accelerated implementation of the
 	  SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
 
 config CRYPTO_SHA256
@@ -55,6 +56,16 @@
 	  This version of SHA implements a 256 bit hash with 128 bits of
 	  security against collision attacks.
 
+config CRYPTO_SHA256_S390
+	tristate "SHA256 digest algorithm (s390)"
+	depends on CRYPTO && ARCH_S390
+	help
+	  This is the s390 hardware accelerated implementation of the
+	  SHA256 secure hash standard (DFIPS 180-2).
+
+	  This version of SHA implements a 256 bit hash with 128 bits of
+	  security against collision attacks.
+
 config CRYPTO_SHA512
 	tristate "SHA384 and SHA512 digest algorithms"
 	depends on CRYPTO