[nrf noup] include: net: add delayed addr refresh socket option

nrf-squash! [nrf noup] include: net: add NCS extensions

Add SO_IPV6_DELAYED_ADDR_REFRESH socket option.

Signed-off-by: Andreas Moltumyr <[email protected]>

Author: anhmolt

include/zephyr/net/socket_ncs.h

@@ -133,6 +133,9 @@ extern "C" {
 /** sockopt: enable IPv6 ICMP replies */
 #define SO_IPV6_ECHO_REPLY 32
 
+/** sockopt: Delay IPv6 address refresh during power saving mode  */
+#define SO_IPV6_DELAYED_ADDR_REFRESH 62
+
 /* NCS specific TCP level socket options */
 
 /** sockopt: Configurable TCP server session timeout in minutes.