crypto: s390 - Fix sha build failure

Use struct s390_sha_ctx instead of sha1/sha256_state struct to fix
s390 crypto build break.

Signed-off-by: Sachin Sant <sachinp@in.ibm.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/arch/s390/crypto/sha1_s390.c b/arch/s390/crypto/sha1_s390.c
index 2c5ec79..4a94378 100644
--- a/arch/s390/crypto/sha1_s390.c
+++ b/arch/s390/crypto/sha1_s390.c
@@ -59,7 +59,7 @@
 
 static int sha1_import(struct shash_desc *desc, const u8 *in)
 {
-	struct sha1_state *sctx = shash_desc_ctx(desc);
+	struct s390_sha_ctx *sctx = shash_desc_ctx(desc);
 	struct sha1_state *ictx = in;
 
 	sctx->count = ictx->count;