crc: add test.h header to test.c

This way the static analyzers know that there's a reason
for the exported function.

Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/crc/test.c b/crc/test.c
index 174bea3..2cc7c0f 100644
--- a/crc/test.c
+++ b/crc/test.c
@@ -18,6 +18,8 @@
 #include "../crc/sha512.h"
 #include "../crc/xxhash.h"
 
+#include "test.h"
+
 #define CHUNK		131072U
 #define NR_CHUNKS	  2048U