Move existing supplicant AIDL code to the
/aidl/vendor subdirectory.

/aidl/mainline directory will be added next
to store the mainline AIDL code.

Bug: 365585450
Test: m
Change-Id: I25c767fd278d30079e7cf2ba8d619802a0aabbc9
diff --git a/wpa_supplicant/dpp_supplicant.c b/wpa_supplicant/dpp_supplicant.c
index 75a3d78..1b2c756 100644
--- a/wpa_supplicant/dpp_supplicant.c
+++ b/wpa_supplicant/dpp_supplicant.c
@@ -29,7 +29,7 @@
 #include "scan.h"
 #include "notify.h"
 #include "dpp_supplicant.h"
-#include "aidl/aidl.h"
+#include "aidl/vendor/aidl.h"
 
 
 static int wpas_dpp_listen_start(struct wpa_supplicant *wpa_s,