[PATCH v4] memblock tests: fix compilation errors

[Liu Xinpeng <liuxp11@chinatelecom.cn>]

Do 'make -C tools/testing/memblock', get the following errors:

memblock.o: In function `memblock_find_in_range.constprop.9':
memblock.c:(.text+0x4651): undefined reference to `pr_warn_ratelimited'
memblock.o: In function `memblock_mark_mirror':
memblock.c:(.text+0x7171): undefined reference to `mirrored_kernelcore'

Fixes: 902c2d91582c ("memblock: Disable mirror feature if kernelcore is not specified")
Fixes: 14d9a675fd0d ("mm: Ratelimited mirrored memory related warning messages")

Signed-off-by: Liu Xinpeng <liuxp11@chinatelecom.cn>
Tested-by: Ma Wupeng <mawupeng1@huawei.com>

---
Changelog:
V3 -> V4: Changed the title and add how to reproduce this issue.
V2 -> V3: Fixs should not have word wrap.
V1 -> V2: Removed comma in macro define and addressed review comments.
---
 tools/testing/memblock/internal.h | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/testing/memblock/internal.h b/tools/testing/memblock/internal.h
index c2a492c05e0c..fdb7f5db7308 100644
--- a/tools/testing/memblock/internal.h
+++ b/tools/testing/memblock/internal.h
@@ -9,6 +9,10 @@
 static int memblock_debug = 1;
 #endif
 
+#define pr_warn_ratelimited(fmt, ...)    printf(fmt, ##__VA_ARGS__)
+
+bool mirrored_kernelcore = false;
+
 struct page {};
 
 void memblock_free_pages(struct page *page, unsigned long pfn,
-- 
1.8.3.1