Build: export include headers via Soong target
am: 54c055be4f

Change-Id: I1893793e0a211ec51abdae579c5944679ddd62cb
diff --git a/Android.bp b/Android.bp
new file mode 100644
index 0000000..9e7844d
--- /dev/null
+++ b/Android.bp
@@ -0,0 +1,5 @@
+cc_library_headers {
+    name: "pybind11_headers",
+    host_supported: true,
+    export_include_dirs: ["include"],
+}