drivers: wifi: siwx91x: Adding TLS bitmap

To support the SiWx917 TLS Sockets , Need to
enable the TLS bitmap in the intilization

Signed-off-by: Rahul Gurram <rahul.gurram@silabs.com>

Author: ragurram26

drivers/wifi/siwx91x/Kconfig.siwx91x

@@ -134,6 +134,14 @@ config WIFI_SILABS_SIWX91X_DNS_CLIENT
 	  resources than the Zephyr one. See also sl_net_dns.h in Silabs
 	  HAL for more information about the API.
 
+config WIFI_SILABS_SIWX91X_ENABLE_TLS
+	bool "Offloaded implementation of TLS"
+	help
+	  Enable this option to allow to use the TLS(Transport layer Security)
+	  implementation over the network provided by the Network Co-Processor
+	  present on SiWx91x series. This implementation usually require less
+	  resources than the Zephyr one.
+
 config WIFI_SILABS_SIWX91X_ENABLE_ROAMING
 	bool "WiFi roaming support"
 	default y

soc/silabs/silabs_siwx91x/siwg917/nwp.c

@@ -142,6 +142,9 @@ static void siwx91x_configure_network_stack(sl_si91x_boot_configuration_t *boot_
 	if (IS_ENABLED(CONFIG_WIFI_SILABS_SIWX91X_DNS_CLIENT)) {
 		boot_config->tcp_ip_feature_bit_map |= SL_SI91X_TCP_IP_FEAT_DNS_CLIENT;
 	}
+	if (IS_ENABLED(CONFIG_WIFI_SILABS_SIWX91X_ENABLE_TLS)) {
+		boot_config->tcp_ip_feature_bit_map |= SL_SI91X_TCP_IP_FEAT_SSL;
+	}
 	if (IS_ENABLED(CONFIG_WIFI_SILABS_SIWX91X_MQTT_CLIENT)) {
 		boot_config->ext_tcp_ip_feature_bit_map |= SL_SI91X_EXT_EMB_MQTT_ENABLE;
 	}