Merge branch 'bugfix/enable_ipv6_if_nan_v5.2' into 'release/v5.2'

bugfix(wifi): Enable IPv6 support via LWIP_IPV6 when WiFi Aware(NAN) is enabled (Backport v5.2)

See merge request espressif/esp-idf!40490

components/esp_wifi/Kconfig

@@ -463,6 +463,7 @@ menu "Wi-Fi"
         bool "WiFi Aware"
         default n
         depends on SOC_WIFI_NAN_SUPPORT
+        select LWIP_IPV6
         help
             Enable WiFi Aware (NAN) feature.
 

examples/wifi/wifi_aware/nan_subscriber/main/subscriber_main.c

@@ -31,6 +31,9 @@
 #else
 #define EXAMPLE_NAN_SVC_MSG             "Hello"
 #endif
+#ifndef ETH_ALEN
+#define ETH_ALEN 6
+#endif
 
 static const char *TAG = "subscriber";