qcacmn: set customizable rx_buffer_size

introduce custom rx_buffer_size from INI within the bounds of
2048-4096

Change-Id: I17ad727cea74fc559d6407d3c8662cb6a4cd6b0a
CRs-Fixed: 3631271

dp/wifi3.0/dp_rx_err.c

@@ -886,7 +886,11 @@ dp_rx_null_q_handle_invalid_peer_id_exception(struct dp_soc *soc,
 
 bool dp_rx_check_pkt_len(struct dp_soc *soc, uint32_t pkt_len)
 {
-	if (qdf_unlikely(pkt_len > RX_DATA_BUFFER_SIZE)) {
+	uint16_t buf_size;
+
+	buf_size = wlan_cfg_rx_buffer_size(soc->wlan_cfg_ctx);
+
+	if (qdf_unlikely(pkt_len > buf_size)) {
 		DP_STATS_INC_PKT(soc, rx.err.rx_invalid_pkt_len,
 				 1, pkt_len);
 		return true;
@@ -1633,6 +1637,9 @@ dp_rx_err_route_hdl(struct dp_soc *soc, qdf_nbuf_t nbuf,
 	struct dp_vdev *vdev;
 	struct hal_rx_msdu_metadata msdu_metadata;
 	bool is_eapol;
+	uint16_t buf_size;
+
+	buf_size = wlan_cfg_rx_buffer_size(soc->wlan_cfg_ctx);
 
 	qdf_nbuf_set_rx_chfrag_start(
 				nbuf,
@@ -1659,8 +1666,7 @@ dp_rx_err_route_hdl(struct dp_soc *soc, qdf_nbuf_t nbuf,
 			goto drop_nbuf;
 
 		/* Set length in nbuf */
-		qdf_nbuf_set_pktlen(
-			nbuf, qdf_min(pkt_len, (uint32_t)RX_DATA_BUFFER_SIZE));
+		qdf_nbuf_set_pktlen(nbuf, qdf_min(pkt_len, (uint32_t)buf_size));
 	}
 
 	/*