qcacmn: revert 2 gerrits from 4k ini change

This reverts commit Icd1bbe85182d6baf1e25dceed0b45994aa9f55fc.
This reverts commit Id00c6351bf6bc1b9df5e19064b2057dadd315e9b.

- revert add rx_buffer_size to softumac case
- revert 4k skb buffer change.

Change-Id: I623b200c0c5f08f0e372629cb1c972b521c25eaa
CRs-Fixed: 3623665

wlan_cfg/wlan_cfg.c

@@ -4189,7 +4189,6 @@ wlan_cfg_soc_attach(struct cdp_ctrl_objmgr_psoc *psoc)
 	wlan_soc_tx_packet_inspect_attach(psoc, wlan_cfg_ctx);
 	wlan_soc_local_pkt_capture_cfg_attach(psoc, wlan_cfg_ctx);
 	wlan_soc_umac_reset_cfg_attach(psoc, wlan_cfg_ctx);
-	wlan_cfg_ctx->rx_buffer_size = cfg_get(psoc, CFG_DP_RX_BUFFER_SIZE);
 	return wlan_cfg_ctx;
 }
 
@@ -4231,7 +4230,6 @@ wlan_cfg_soc_attach(struct cdp_ctrl_objmgr_psoc *psoc)
 
 	wlan_cfg_ctx->tx_ring_size = cfg_get(psoc, CFG_DP_TX_RING_SIZE);
 	wlan_cfg_ctx->time_control_bp = cfg_get(psoc, CFG_DP_TIME_CONTROL_BP);
-	wlan_cfg_ctx->rx_buffer_size = cfg_get(psoc, CFG_DP_RX_BUFFER_SIZE);
 	wlan_cfg_ctx->qref_control_size =
 					cfg_get(psoc, CFG_DP_QREF_CONTROL_SIZE);
 	wlan_cfg_ctx->tx_comp_ring_size = cfg_get(psoc,
@@ -4852,13 +4850,6 @@ int wlan_cfg_time_control_bp(struct wlan_cfg_dp_soc_ctxt *cfg)
 	return cfg->time_control_bp;
 }
 
-int wlan_cfg_rx_buffer_size(struct wlan_cfg_dp_soc_ctxt *cfg)
-{
-	return cfg->rx_buffer_size;
-}
-
-qdf_export_symbol(wlan_cfg_rx_buffer_size);
-
 int wlan_cfg_qref_control_size(struct wlan_cfg_dp_soc_ctxt *cfg)
 {
 	return cfg->qref_control_size;