crypto: sun4i-ss - hide the Invalid keylen message

Drop the "Invalid keylen" message to debug level, it adds no value, and
when CRYPTO_EXTRA_TEST is enabled, it floods the console.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c

@@ -540,7 +540,7 @@ int sun4i_ss_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
 		op->keymode = SS_AES_256BITS;
 		break;
 	default:
-		dev_err(ss->dev, "ERROR: Invalid keylen %u\n", keylen);
+		dev_dbg(ss->dev, "ERROR: Invalid keylen %u\n", keylen);
 		crypto_skcipher_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
 		return -EINVAL;
 	}