make bpf_headers visible to libclat

Needed because ClatdController and clatd binary are moved
into apex. libclat is used for accessing BPF map.

Bug: 212345928
Test: manual test
    1. Connect to ipv6-only wifi.
    2. Try IPv4 traffic.
       $ ping 8.8.8.8
Change-Id: If3fb00e12ef365ccf3ac782c4e6ecbfd01d2dd4c
diff --git a/common/native/bpf_headers/Android.bp b/common/native/bpf_headers/Android.bp
index af8ec73..2fc0567 100644
--- a/common/native/bpf_headers/Android.bp
+++ b/common/native/bpf_headers/Android.bp
@@ -47,6 +47,7 @@
         "//packages/modules/Connectivity/bpf_progs",
         "//packages/modules/Connectivity/netd",
         "//packages/modules/Connectivity/service/native",
+	"//packages/modules/Connectivity/service/native/libs/libclat",
         "//packages/modules/Connectivity/tests/unit/jni",
         "//packages/modules/DnsResolver/tests",
         "//system/bpf/bpfloader",