qahw_api: Fix compile error in record test app

Use correct format specifier while printing value to fix
compile error.

CRs-Fixed: 2273661
Change-Id: I542a7dff8c0c462ece5a420bae4a5f236cff8ff2
diff --git a/qahw_api/test/qahw_multi_record_test.c b/qahw_api/test/qahw_multi_record_test.c
index ed8fe40..8762617 100644
--- a/qahw_api/test/qahw_multi_record_test.c
+++ b/qahw_api/test/qahw_multi_record_test.c
@@ -432,7 +432,7 @@
       bytes_read = qahw_in_read(in_handle, &in_buf);
 
       if (params->timestamp_mode)
-          fprintf(fd_in_ts, "timestamp:%lu\n", timestamp);
+          fprintf(fd_in_ts, "timestamp:%lld\n", timestamp);
       if (kpi_mode) {
           if (count == 0) {
               ret = clock_gettime(CLOCK_REALTIME, &tsColdF);