Bionic and kernel system include paths are no longer implicit.

Test: Build and boot
Bug: 153590472
Change-Id: I1755d6648e467e8a1edb613278ed756888a6fc3a
diff --git a/tools/cpp-define-generator/Android.bp b/tools/cpp-define-generator/Android.bp
index b889a3d..d6c7663 100644
--- a/tools/cpp-define-generator/Android.bp
+++ b/tools/cpp-define-generator/Android.bp
@@ -27,6 +27,7 @@
         "art_libartbase_headers", // For base/bit_utils.h
         "jni_headers",
         "libart_runtime_headers_ndk",
+        "libc_headers", // TODO(b/153662223): Clean this up.
         "libdexfile_all_headers", // For dex/modifiers.h
     ],
     // Produce text file rather than binary.