Merge branch 'bpf-support-setting-max-rto-for-bpf_setsockopt'

Jason Xing says:

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Support max RTO set by BPF program calling bpf_setsockopt().
Add corresponding selftests.
====================

Link: https://patch.msgid.link/20250219081333.56378-1-kerneljasonxing@gmail.com


Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>