Allowlist //build/soong/cc/{ndkstubgen,symbolfile}.

This contains the tool to generate stub libraries.

Bug: 208215661
Bug: 207812332

Test: b run //build/soong/cc/ndkstubgen
Change-Id: Id48d74381457e0a62aca0ed7f8a9367886863bfd
diff --git a/android/bazel.go b/android/bazel.go
index 40c971f..61469dc 100644
--- a/android/bazel.go
+++ b/android/bazel.go
@@ -232,6 +232,8 @@
 		"build/bazel/examples/apex/minimal":                  Bp2BuildDefaultTrueRecursively,
 		"build/soong":                                        Bp2BuildDefaultTrue,
 		"build/soong/cc/libbuildversion":                     Bp2BuildDefaultTrue, // Skip tests subdir
+		"build/soong/cc/ndkstubgen":                          Bp2BuildDefaultTrue,
+		"build/soong/cc/symbolfile":                          Bp2BuildDefaultTrue,
 		"cts/common/device-side/nativetesthelper/jni":        Bp2BuildDefaultTrueRecursively,
 		"development/sdk":                                    Bp2BuildDefaultTrueRecursively,
 		"external/arm-optimized-routines":                    Bp2BuildDefaultTrueRecursively,