rxrpc: Use skcipher

This patch replaces uses of blkcipher with skcipher.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h
index 2934a73..71598f5 100644
--- a/net/rxrpc/ar-internal.h
+++ b/net/rxrpc/ar-internal.h
@@ -252,7 +252,7 @@
 	struct rxrpc_security	*security;	/* applied security module */
 	struct key		*key;		/* security for this connection (client) */
 	struct key		*server_key;	/* security for this service */
-	struct crypto_blkcipher	*cipher;	/* encryption handle */
+	struct crypto_skcipher	*cipher;	/* encryption handle */
 	struct rxrpc_crypt	csum_iv;	/* packet checksum base */
 	unsigned long		events;
 #define RXRPC_CONN_CHALLENGE	0		/* send challenge packet */