Change the netId to nethandle mapping.

Being able to update this handle is necessary to ensure that
system-only OTAs do not break vendor code that relies on
nethandles.

Bug: 63052780
Test: walleye builds, boots, networking works
Test: MultinetworkApiTest CTS tests passes
Change-Id: I049a4ad2610ca68b8f56377b63be7e5e8ce76039
diff --git a/native/android/net.c b/native/android/net.c
index de4b90c..60296a7 100644
--- a/native/android/net.c
+++ b/native/android/net.c
@@ -27,7 +27,7 @@
     static const uint32_t k32BitMask = 0xffffffff;
     // This value MUST be kept in sync with the corresponding value in
     // the android.net.Network#getNetworkHandle() implementation.
-    static const uint32_t kHandleMagic = 0xfacade;
+    static const uint32_t kHandleMagic = 0xcafed00d;
 
     // Check for minimum acceptable version of the API in the low bits.
     if (handle != NETWORK_UNSPECIFIED &&