[NETD-BPF#22] Move a few headers to frameworks/libs/net

BPF headers used by both platform and mainline modules should be in
frameworks/libs/net.

Bug: 202086915
Test: build and boot
Test: cd packages/modules/Connectivity/netd; atest
Change-Id: Id9ac888d5519b2a8663232610d36386cabfe4e94
diff --git a/libbpf_android/Loader.cpp b/libbpf_android/Loader.cpp
index 1892fe2..abe1704 100644
--- a/libbpf_android/Loader.cpp
+++ b/libbpf_android/Loader.cpp
@@ -33,8 +33,8 @@
 #define BPFLOADER_VERSION_MINOR 8u
 #define BPFLOADER_VERSION ((BPFLOADER_VERSION_MAJOR << 16) | BPFLOADER_VERSION_MINOR)
 
-#include "../progs/include/bpf_map_def.h"
 #include "bpf/BpfUtils.h"
+#include "bpf/bpf_map_def.h"
 #include "include/libbpf_android.h"
 
 #include <cstdlib>