Add //build/bazel/examples/soong_config_variables/... to bp2build
allowlist.

Test: CI
Bug: 203677881
Change-Id: Id95f272005c356b22b1f24f932cb1ef6c3363d03
diff --git a/android/bazel.go b/android/bazel.go
index e97acff..72aad60 100644
--- a/android/bazel.go
+++ b/android/bazel.go
@@ -226,7 +226,8 @@
 
 	// Configure modules in these directories to enable bp2build_available: true or false by default.
 	bp2buildDefaultConfig = Bp2BuildConfig{
-		"bionic":                                             Bp2BuildDefaultTrueRecursively,
+		"bionic": Bp2BuildDefaultTrueRecursively,
+		"build/bazel/examples/soong_config_variables":        Bp2BuildDefaultTrueRecursively,
 		"build/bazel/examples/apex/minimal":                  Bp2BuildDefaultTrueRecursively,
 		"build/soong/cc/libbuildversion":                     Bp2BuildDefaultTrue, // Skip tests subdir
 		"development/sdk":                                    Bp2BuildDefaultTrueRecursively,