BPF: Create android_bpf_defs

Create a new header lib to assist with the transition between bpf and
libbpf.

Bug: 359646531
Test: Manual/TH
Change-Id: I6b57d22ce56851f751c2e77af32b15b2b789fb25
Signed-off-by: Neill Kapron <nkapron@google.com>
diff --git a/Android.bp b/Android.bp
index dca9aba..14a195b 100644
--- a/Android.bp
+++ b/Android.bp
@@ -33,6 +33,11 @@
     },
 }
 
+cc_library_headers {
+    name: "android_bpf_defs",
+    export_include_dirs: ["include/defs"],
+}
+
 cc_defaults {
     name: "bpf_cc_defaults",
     cflags: [