Revert "crypto: run initcalls for generic implementations earlier"

This reverts commit c4741b2305.

Crypto API self-tests no longer run at registration time and now
occur either at late_initcall or upon the first use.

Therefore the premise of the above commit no longer exists.  Revert
it and subsequent additions of subsys_initcall and arch_initcall.

Note that lib/crypto calls will stay at subsys_initcall (or rather
downgraded from arch_initcall) because they may need to occur
before Crypto API registration.

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

crypto/crypto_null.c

@@ -210,7 +210,7 @@ static void __exit crypto_null_mod_fini(void)
 	crypto_unregister_skcipher(&skcipher_null);
 }
 
-subsys_initcall(crypto_null_mod_init);
+module_init(crypto_null_mod_init);
 module_exit(crypto_null_mod_fini);
 
 MODULE_LICENSE("GPL");