net/tcp: rename ack_edge and seq_init to more common rcv_nxt and irs

Use the names from RFC 9293

Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/include/net/tcp.h b/include/net/tcp.h
index f224d0c..0694af9 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -285,8 +285,8 @@
  *
  * @state:		TCP connection state
  *
- * @seq_init:		Initial receive sequence number
- * @ack_edge:		Receive next
+ * @irs:		Initial receive sequence number
+ * @rcv_nxt:		Receive next
  *
  * @loc_timestamp:	Local timestamp
  * @rmt_timestamp:	Remote timestamp
@@ -301,8 +301,8 @@
 	/* TCP connection state */
 	enum tcp_state	state;
 
-	u32		seq_init;
-	u32		ack_edge;
+	u32		irs;
+	u32		rcv_nxt;
 
 	/* TCP option timestamp */
 	u32		loc_timestamp;