bankd: move bank_id / num_slots from g_bankd to remsim_srv_conn

... and make num_slots configurable via command line argument

Change-Id: Id8f15085b397186d3470f4d943979857b6811a52
diff --git a/src/rspro_client_fsm.h b/src/rspro_client_fsm.h
index ea88333..8e7f58c 100644
--- a/src/rspro_client_fsm.h
+++ b/src/rspro_client_fsm.h
@@ -34,6 +34,12 @@
 	/* configuration */
 	char *server_host;
 	uint16_t server_port;
+
+	/* only in case we are representing a bankd client */
+	struct {
+		uint16_t bank_id;
+		uint16_t num_slots;
+	} bankd;
 };
 
 int ipa_client_conn_send_rspro(struct ipa_client_conn *ipa, RsproPDU_t *rspro);