imraa: add first version of IO pinmuxing and clean up

Signed-off-by: Longwei Su <lsu@ics.com>
Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

src/mraa.c

@@ -1036,6 +1036,7 @@ mraa_add_from_lockfile(const char* imraa_lock_file) {
     } else {
         fprintf(stderr, "lockfile string incorrectly parsed\n");
     }
+    json_object_put(jobj_lock);
     free(buffer);
     return subplat_num;
 }