Adding to semver

Author: BrandonMFong

libc-test/semver/linux.txt

@@ -895,6 +895,14 @@ IFF_MULTICAST
 IFF_MULTI_QUEUE
 IFF_NOARP
 IFF_NOFILTER
+TUN_TX_TIMESTAMP
+TUN_F_CSUM
+TUN_F_TSO4
+TUN_F_TSO6
+TUN_F_TSO_ECN
+TUN_F_UFO
+TUN_PKT_STRIP
+TUN_FLT_ALLMULTI
 IFF_NOTRAILERS
 IFF_NO_PI
 IFF_ONE_QUEUE
@@ -906,6 +914,8 @@ IFF_RUNNING
 IFF_SLAVE
 IFF_TAP
 IFF_TUN
+IFF_NAPI
+IFF_NAPI_FRAGS
 IFF_TUN_EXCL
 IFF_UP
 IFF_VNET_HDR