qcacmn: Add peer debug ID for unmap_timer_work peer reference

There is race when unamp_timer_work and peer is deleted. Hold the
reference to peer while handling the peer_unmap_timer_work.
Add new peer debug_ID for unmap_timer_work.

Change-Id: Ibfd5de602883d3219d1e634ef74ff04e7914efb4
CRs-Fixed: 2383778

dp/inc/cdp_txrx_mob_def.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -225,6 +225,7 @@ enum peer_debug_id_type {
 	PEER_DEBUG_ID_OL_PEER_ATTACH,
 	PEER_DEBUG_ID_OL_TXQ_VDEV_FL,
 	PEER_DEBUG_ID_OL_HASH_ERS,
+	PEER_DEBUG_ID_OL_UNMAP_TIMER_WORK,
 	PEER_DEBUG_ID_MAX
 };