dcsctp: Add priority to dcsctp handover state

Adding it as a separate CL to allow upstream code to support it.

Bug: webrtc:5696
Change-Id: I817a09e1b1121e5baf88b9922f84a2de245e6cc2
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/264447
Commit-Queue: Florent Castelli <orphis@webrtc.org>
Auto-Submit: Victor Boivie <boivie@webrtc.org>
Reviewed-by: Florent Castelli <orphis@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#37046}
diff --git a/net/dcsctp/public/dcsctp_handover_state.h b/net/dcsctp/public/dcsctp_handover_state.h
index a58535d..36fc37b 100644
--- a/net/dcsctp/public/dcsctp_handover_state.h
+++ b/net/dcsctp/public/dcsctp_handover_state.h
@@ -48,6 +48,7 @@
     uint32_t next_ssn = 0;
     uint32_t next_unordered_mid = 0;
     uint32_t next_ordered_mid = 0;
+    uint16_t priority = 0;
   };
   struct Transmission {
     uint32_t next_tsn = 0;