Add bison.runfiles_dir. am: 8e530191a5

Original change: https://android-review.googlesource.com/c/platform/prebuilts/build-tools/+/2985334

Change-Id: I0d12d5713b4c93916a70657869da8b08c5907b2f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/BUILD.bazel b/BUILD.bazel
index c7e58af..8ece926 100644
--- a/BUILD.bazel
+++ b/BUILD.bazel
@@ -105,3 +105,9 @@
         "common/bison/**",
     ]),
 )
+
+# Point to the directory so variables can know where to set BISON_PKGDATADIR to
+filegroup(
+    name = "bison.runfiles_dir",
+    srcs = ["common/bison"],
+)