GSD-2023-1000562 ppp: associate skb with a device at tx

ppp: associate skb with a device at tx This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v6.0.16 by commit 18dc946360bfe0de016a59e3cc3ee1f450fceb9...