samples: net: wifi: nxp: update net related configurations

Using NET_TCP_MAX_SEND_WINDOW_SIZE and NET_TCP_MAX_RECV_WINDOW_SIZE
for TCP case.
Reduce net_buf count to save memory.

Signed-off-by: Maochen Wang <maochen.wang@nxp.com>

Author: MaochenWang1

samples/net/wifi/shell/boards/frdm_rw612.conf

@@ -38,11 +38,13 @@ CONFIG_ETH_MCUX=n
 CONFIG_NET_ZPERF=y
 CONFIG_NET_ZPERF_MAX_PACKET_SIZE=1500
 CONFIG_NET_BUF_LOG=y
-CONFIG_NET_PKT_RX_COUNT=60
-CONFIG_NET_PKT_TX_COUNT=40
-CONFIG_NET_BUF_RX_COUNT=60
-CONFIG_NET_BUF_TX_COUNT=80
+CONFIG_NET_PKT_RX_COUNT=36
+CONFIG_NET_PKT_TX_COUNT=36
+CONFIG_NET_BUF_RX_COUNT=40
+CONFIG_NET_BUF_TX_COUNT=40
 CONFIG_NET_BUF_DATA_SIZE=1744
+CONFIG_NET_TCP_MAX_SEND_WINDOW_SIZE=46720
+CONFIG_NET_TCP_MAX_RECV_WINDOW_SIZE=46720
 CONFIG_NET_TC_TX_COUNT=1
 CONFIG_NET_TC_RX_COUNT=1
 CONFIG_NET_MGMT_EVENT_QUEUE_SIZE=20

samples/net/wifi/shell/boards/rd_rw612_bga.conf

@@ -38,11 +38,13 @@ CONFIG_ETH_MCUX=n
 CONFIG_NET_ZPERF=y
 CONFIG_NET_ZPERF_MAX_PACKET_SIZE=1500
 CONFIG_NET_BUF_LOG=y
-CONFIG_NET_PKT_RX_COUNT=60
-CONFIG_NET_PKT_TX_COUNT=40
-CONFIG_NET_BUF_RX_COUNT=60
-CONFIG_NET_BUF_TX_COUNT=80
+CONFIG_NET_PKT_RX_COUNT=36
+CONFIG_NET_PKT_TX_COUNT=36
+CONFIG_NET_BUF_RX_COUNT=40
+CONFIG_NET_BUF_TX_COUNT=40
 CONFIG_NET_BUF_DATA_SIZE=1744
+CONFIG_NET_TCP_MAX_SEND_WINDOW_SIZE=46720
+CONFIG_NET_TCP_MAX_RECV_WINDOW_SIZE=46720
 CONFIG_NET_TC_TX_COUNT=1
 CONFIG_NET_TC_RX_COUNT=1
 CONFIG_NET_MGMT_EVENT_QUEUE_SIZE=20