Merge branch 'tcp-disable-header-prediction-for-md5'

Kuniyuki Iwashima says:

====================
tcp: Disable header prediction for MD5.

The 1st patch disable header prediction for MD5 flow and the 2nd
patch updates the stale comment in tcp_parse_options().
====================

Link: https://lore.kernel.org/r/20230803224552.69398-1-kuniyu@amazon.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>