[tint][gn] Hook up tint_info to the build

This BUILD.gn file wasn't referenced by anything, so was never built

Change-Id: I8af0e15e36193b780c3381b8c9def535ad89e5f1
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/160086
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: James Price <jrprice@google.com>
diff --git a/src/tint/BUILD.gn b/src/tint/BUILD.gn
index 549aefc..d083bef 100644
--- a/src/tint/BUILD.gn
+++ b/src/tint/BUILD.gn
@@ -262,6 +262,7 @@
   deps = []
   if (tint_build_cmds) {
     deps += [
+      "${tint_src_dir}/cmd/info",
       "${tint_src_dir}/cmd/remote_compile",
       "${tint_src_dir}/cmd/tint",
     ]