test/hash: add missing file in meson build

The test_hash_readwrite.c was not in the meson.build file. This
commit adds the missing test into the file.

Fixes: 0eb3726ebcf1 ("test/hash: add test for read/write concurrency")
Cc: stable@dpdk.org

Signed-off-by: Yipeng Wang <yipeng1.wang@intel.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

test/test/meson.build

@@ -44,6 +44,7 @@ test_sources = files('commands.c',
 	'test_hash.c',
 	'test_hash_functions.c',
 	'test_hash_multiwriter.c',
+	'test_hash_readwrite.c',
 	'test_hash_perf.c',
 	'test_hash_scaling.c',
 	'test_interrupts.c',