Export libc_headers from libdl_static for libraries that wrap it
without bringing in libc.

Required by the native bridge libdl wrapper.

Test: m (on cf_x86_phone)
Bug: 153590472
Change-Id: Ib9b1b741aaf5b09b24d7dce09a49c2fa7737209f
diff --git a/libdl/Android.bp b/libdl/Android.bp
index 37bdbdd..6a3a82e 100644
--- a/libdl/Android.bp
+++ b/libdl/Android.bp
@@ -26,6 +26,7 @@
     stl: "none",
     system_shared_libs: [],
     header_libs: ["libc_headers"],
+    export_header_lib_headers: ["libc_headers"],
 
     sanitize: {
         never: true,