[CRYPTO] api: Added crypto_type support

This patch adds the crypto_type structure which will be used for all new
crypto algorithm types, beginning with block ciphers.

The primary purpose of this abstraction is to allow different crypto_type
objects for crypto algorithms of the same type, in particular, there will
be a different crypto_type objects for asynchronous algorithms.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

crypto/proc.c

@@ -78,7 +78,10 @@ static int c_show(struct seq_file *m, void *p)
 		seq_printf(m, "type         : compression\n");
 		break;
 	default:
-		seq_printf(m, "type         : unknown\n");
+		if (alg->cra_type && alg->cra_type->show)
+			alg->cra_type->show(m, alg);
+		else
+			seq_printf(m, "type         : unknown\n");
 		break;
 	}