doc: release-notes: Add wifi information to 4.3

Add information about native wifi stack changes in 4.3.

Signed-off-by: Jukka Rissanen <[email protected]>

Author: jukkar

doc/releases/release-notes-4.3.rst

@@ -429,6 +429,14 @@ New APIs and options
     * :c:macro:`IPV6_RECVHOPLIMIT`
     * :c:macro:`IPV6_HOPLIMIT`
 
+  * Wi-Fi
+
+    * :kconfig:option:`CONFIG_WIFI_NM_WPA_SUPPLICANT_DEBUG_SHOW_KEYS`
+    * Set enterprise crypto insecure because certifcate validation is disabled.
+    * If the usage mode option has AP enabled, then automatically enable AP mode.
+    * Add configuration options for background scanning (bgscan) in wpa_supplicant.
+    * Add support for multiple virtual interfaces (VIF).
+
 * Newlib
 
   * :kconfig:option:`CONFIG_NEWLIB_LIBC_USE_POSIX_LIMITS_H`