qcacmn: Add DP INI to tune netdev features at runtime

Add INI to modify the HW checksum capability advertisement.
Add hook to update enable/disable of HW checksum for vdev.

Change-Id: Idd0bad1d39c8411c7b4ef19483aa2c75a756791b
CRs-Fixed: 2732099

wlan_cfg/wlan_cfg.c

@@ -547,6 +547,8 @@ wlan_cfg_soc_attach(struct cdp_ctrl_objmgr_psoc *psoc)
 			cfg_get(psoc, CFG_DP_NAN_TCP_UDP_CKSUM_OFFLOAD);
 	wlan_cfg_ctx->tcp_udp_checksumoffload =
 			cfg_get(psoc, CFG_DP_TCP_UDP_CKSUM_OFFLOAD);
+	wlan_cfg_ctx->legacy_mode_checksumoffload_disable =
+			cfg_get(psoc, CFG_DP_LEGACY_MODE_CSUM_DISABLE);
 	wlan_cfg_ctx->per_pkt_trace = cfg_get(psoc, CFG_DP_PER_PKT_LOGGING);
 	wlan_cfg_ctx->defrag_timeout_check =
 			cfg_get(psoc, CFG_DP_DEFRAG_TIMEOUT_CHECK);