kernel-6.1: update to 6.1.87

[larvacea]

Description

Rebase to Amazon Linux upstream version 6.1.87-99.174.amzn2023.

Testing done:

Validate basic functionality through sonobuoy quick test:

> kubectl get nodes -o wide
NAME                                           STATUS   ROLES    AGE    VERSION               INTERNAL-IP      EXTERNAL-IP      OS-IMAGE                                KERNEL-VERSION   CONTAINER-RUNTIME
ip-192-168-74-137.us-west-2.compute.internal   Ready    <none>   104s   v1.28.7-eks-c5c5da4   192.168.74.137   44.242.171.195   Bottlerocket OS 1.20.0 (aws-k8s-1.28)   6.1.87           containerd://1.6.31+bottlerocket

> sonobuoy run --mode=quick --wait
[...]

Changes to the configs as reported by tools/diff-kernel-config:

config-aarch64-aws-k8s-1.28-diff:         0 removed,   0 added,   0 changed
config-x86_64-aws-k8s-1.28-diff:          0 removed,   1 added,   0 changed
config-x86_64-metal-k8s-1.28-diff:        0 removed,   1 added,   0 changed
config-x86_64-vmware-k8s-1.28-diff:       0 removed,   1 added,   0 changed

The full diff-report can be found on Gist.

The one added configuration enables a mitigation on the x86_64 platform.

Patches

There are four new patches; they are all compatible with our environment.

Terms of contribution"

By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.