always declare extended length capabilities

allows usage of an unpatched version of OpenPACE. libnpa now works with
the nPA using the default card driver.

npa/src/npa.c

@@ -1252,9 +1252,16 @@ int EstablishPACEChannel(struct sm_ctx *oldnpactx, sc_card_t *card,
                 goto err;
             }
         }
+
         bin_log(card->ctx, SC_LOG_DEBUG_NORMAL, "EF.CardAccess", pace_output->ef_cardaccess,
                 pace_output->ef_cardaccess_length);
 
+        /* XXX Card capabilities should be determined by the OpenSC card driver. We
+         * set it here to be able to use the nPA without patching OpenSC. By
+         * now we have read the EF.CardAccess so the assumption to have an nPA
+         * seems valid. */
+        card->caps |= SC_CARD_CAP_APDU_EXT;
+
         eac_ctx = EAC_CTX_new();
         if (!eac_ctx
                 || !EAC_CTX_init_ef_cardaccess(pace_output->ef_cardaccess,