crypto: extend mode as a parameter in qcrypto_cipher_supports()

It can't guarantee all cipher modes are supported
if one cipher algorithm is supported by a backend.
Let's extend qcrypto_cipher_supports() to take both
the algorithm and mode as parameters.

Signed-off-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

ui/vnc.c

@@ -3606,7 +3606,7 @@ void vnc_display_open(const char *id, Error **errp)
             goto fail;
         }
         if (!qcrypto_cipher_supports(
-                QCRYPTO_CIPHER_ALG_DES_RFB)) {
+                QCRYPTO_CIPHER_ALG_DES_RFB, QCRYPTO_CIPHER_MODE_ECB)) {
             error_setg(errp,
                        "Cipher backend does not support DES RFB algorithm");
             goto fail;