qcacmn: Correct the offsets & byte cnt computation in HTT stats

Offsets used by host for HTT stats are not aligned as per the
structure declaration given in file htt.h .
Make change to use the correct offsets to get the correct stats.

Also make change for byte count computation.

Also make cleanup changes for FR65817.

Change-Id: I8bc6164cc4994c49536d7277779f25b258be1592
CRs-Fixed: 3082742

wlan_cfg/wlan_cfg.c

@@ -3141,6 +3141,13 @@ int wlan_cfg_get_vdev_stats_hw_offload_timer(struct wlan_cfg_dp_soc_ctxt *cfg)
 {
 	return cfg->vdev_stats_hw_offload_timer;
 }
+
+void
+wlan_cfg_set_vdev_stats_hw_offload_config(struct wlan_cfg_dp_soc_ctxt *cfg,
+					  bool val)
+{
+	cfg->vdev_stats_hw_offload_config = val;
+}
 #else
 bool
 wlan_cfg_get_vdev_stats_hw_offload_config(struct wlan_cfg_dp_soc_ctxt *cfg)
@@ -3152,4 +3159,9 @@ int wlan_cfg_get_vdev_stats_hw_offload_timer(struct wlan_cfg_dp_soc_ctxt *cfg)
 {
 	return 0;
 }
+
+void
+wlan_cfg_set_vdev_stats_hw_offload_config(struct wlan_cfg_dp_soc_ctxt *cfg,
+					  bool val)
+{}
 #endif