[posix] loose check for NETLINK_EXT_ACK and NETLINK_CAP_ACK (openthre…

…ad#9299)

`NETLINK_EXT_ACK` and `NETLINK_CAP_ACK` are for getting netlink reply
details from the kernel and we can still function without the two
options.

This commit loose the check of enabling the two options to make
ot-posix works on platforms where the features are missing.

src/posix/platform/netif.cpp

@@ -2004,10 +2004,18 @@ static void platformConfigureNetLink(void)
     {
         int enable = 1;
 
-        VerifyOrDie(setsockopt(sNetlinkFd, SOL_NETLINK, NETLINK_EXT_ACK, &enable, sizeof(enable)) == 0,
-                    OT_EXIT_ERROR_ERRNO);
-        VerifyOrDie(setsockopt(sNetlinkFd, SOL_NETLINK, NETLINK_CAP_ACK, &enable, sizeof(enable)) == 0,
-                    OT_EXIT_ERROR_ERRNO);
+#if defined(NETLINK_EXT_ACK)
+        if (setsockopt(sNetlinkFd, SOL_NETLINK, NETLINK_EXT_ACK, &enable, sizeof(enable)) != 0)
+        {
+            otLogWarnPlat("[netif] Failed to enable NETLINK_EXT_ACK: %s", strerror(errno));
+        }
+#endif
+#if defined(NETLINK_CAP_ACK)
+        if (setsockopt(sNetlinkFd, SOL_NETLINK, NETLINK_CAP_ACK, &enable, sizeof(enable)) != 0)
+        {
+            otLogWarnPlat("[netif] Failed to enable NETLINK_CAP_ACK: %s", strerror(errno));
+        }
+#endif
     }
 #endif