owhw: fix GPIO definitions (output low level by default)
diff --git a/firmware/src_simtrace/ccid.c b/firmware/src_simtrace/ccid.c
index 2c70eea..7ff99da 100644
--- a/firmware/src_simtrace/ccid.c
+++ b/firmware/src_simtrace/ccid.c
@@ -27,6 +27,8 @@
  * ----------------------------------------------------------------------------
  */
 
+#ifdef HAVE_CCID
+
 /*------------------------------------------------------------------------------
  *          Headers
  *------------------------------------------------------------------------------*/
@@ -178,3 +180,4 @@
 
     CCID_SmartCardRequest();
 }
+#endif