[PATCH] selftests: cachestat: Fix build warnings on ppc64

[Michael Ellerman <mpe@xxxxxxxxxxxxxx>]

Fix warnings like:
  test_cachestat.c: In function ‘print_cachestat’:
  test_cachestat.c:30:38: warning: format ‘%llu’ expects argument of
  type ‘long long unsigned int’, but argument 2 has type ‘__u64’ {aka
  ‘long unsigned int’} [-Wformat=]

By switching to unsigned long long for u64 for ppc64 builds.

Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
---
 tools/testing/selftests/cachestat/test_cachestat.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/cachestat/test_cachestat.c b/tools/testing/selftests/cachestat/test_cachestat.c
index b171fd53b004..632ab44737ec 100644
--- a/tools/testing/selftests/cachestat/test_cachestat.c
+++ b/tools/testing/selftests/cachestat/test_cachestat.c
@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 #define _GNU_SOURCE
+#define __SANE_USERSPACE_TYPES__ // Use ll64
 
 #include <stdio.h>
 #include <stdbool.h>
-- 
2.45.1