bump tethering tc prio to make room for rate limiting

There is currently a priority gap at 3. We need to bump tethering prios
to 2 and 3 to make room for rate limiting, which should have the top
priority.

Test: m
Bug: 157552970
Change-Id: I6e1087b232a8235e5cd42953470c72e2ae643bdc
diff --git a/Tethering/src/com/android/networkstack/tethering/BpfUtils.java b/Tethering/src/com/android/networkstack/tethering/BpfUtils.java
index 0b44249..cd6733a 100644
--- a/Tethering/src/com/android/networkstack/tethering/BpfUtils.java
+++ b/Tethering/src/com/android/networkstack/tethering/BpfUtils.java
@@ -51,11 +51,11 @@
     static final boolean DOWNSTREAM = true;
     static final boolean UPSTREAM = false;
 
-    // The priority of clat/tether hooks - smaller is higher priority.
+    // The priority of tether hooks - smaller is higher priority.
     // TC tether is higher priority then TC clat to match XDP winning over TC.
-    // Sync from system/netd/server/OffloadUtils.h.
-    static final short PRIO_TETHER6 = 1;
-    static final short PRIO_TETHER4 = 2;
+    // Sync from system/netd/server/TcUtils.h.
+    static final short PRIO_TETHER6 = 2;
+    static final short PRIO_TETHER4 = 3;
     // note that the above must be lower than PRIO_CLAT from netd's OffloadUtils.cpp
 
     private static String makeProgPath(boolean downstream, int ipVersion, boolean ether) {