Matching benchmark directory change in soong

Hwui benchmark changed its dirctory when building because of the change
in soong: Change 479681.

Test: Rebuilt Hwui and benchmark is correct.
Change-Id: I1a8bf453efa56bb90562b21111664d0878c03725
diff --git a/autotest.diff b/autotest.diff
index 95ef2e4..798fdcf 100644
--- a/autotest.diff
+++ b/autotest.diff
@@ -265,7 +265,7 @@
 +        lib64_dir = os.path.join(out_dir, 'system/lib64/libhwui.so')
 +        lib64_dir_DUT = '/system/lib64/libhwui.so'
 +        bench_dir = os.path.join(out_dir,
-+                                 'symbols/data/nativetest64/',
++                                 'symbols/data/benchmarktest64/',
 +                                 'hwuimicro/hwuimicro')
 +        bench_dir_DUT = '/data/local/tmp/hwuimicro'
 +