unix: update Linux constants and types to v6.14

CL 660375 updated the kernel version in the Dockerfile but for some
reason no constant or types were updated. Refresh them now and also add
new ETHTOOL_* and NL80211_* enum types while at it.

Change-Id: I73bc509963f0b89f6d461eeca4b210626ab44975
Reviewed-on: https://go-review.googlesource.com/c/sys/+/673076
Reviewed-by: Carlos Amedee <carlos@golang.org>
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Mauri de Souza Meneguzzo <mauri870@gmail.com>