Update to kernel 6.6.92 for krunkit

- Update to longterm kernel 6.6.92[1]
- Enable Virtio GPU for krunkit

Generated using:

    make iso-menuconfig-aarch64
    make linux-menuconfig-aarch64

With this change we can boot krunkit witht the built iso:

    % minikube start -p krunkit --driver krunkit --container-runtime containerd --iso-url file://$PWD/minikube-arm64-vgpu.iso
    😄  [krunkit] minikube v1.36.0 on Darwin 15.5 (arm64)
    ✨  Using the krunkit (experimental) driver based on user configuration
    👍  Starting "krunkit" primary control-plane node in "krunkit" cluster
    🔥  Creating krunkit VM (CPUs=2, Memory=6000MB, Disk=20000MB) ...
    📦  Preparing Kubernetes v1.33.1 on containerd 1.7.23 ...
        ▪ Generating certificates and keys ...
        ▪ Booting up control plane ...
        ▪ Configuring RBAC rules ...
    🔗  Configuring bridge CNI (Container Networking Interface) ...
    🔎  Verifying Kubernetes components...
        ▪ Using image gcr.io/k8s-minikube/storage-provisioner:v5
    🌟  Enabled addons: storage-provisioner, default-storageclass
    🏄  Done! kubectl is now configured to use "krunkit" cluster and "default" namespace by default

And now we have accelerated gpu:

    $ tree /dev/dri
    /dev/dri
    |-- by-path
    |   |-- platform-a007000.virtio_mmio-card -> ../card0
    |   `-- platform-a007000.virtio_mmio-render -> ../renderD128
    |-- card0
    `-- renderD128

We need to do simila change for x86_64 later.

[1] https://www.kernel.org/

Author: nirs

Makefile

@@ -79,7 +79,7 @@ MINIKUBE_BUCKET ?= minikube/releases
 MINIKUBE_UPLOAD_LOCATION := gs://${MINIKUBE_BUCKET}
 MINIKUBE_RELEASES_URL=https://github.com/kubernetes/minikube/releases/download
 
-KERNEL_VERSION ?= 5.10.207
+KERNEL_VERSION ?= 6.6.92
 # latest from https://github.com/golangci/golangci-lint/releases
 # update this only by running `make update-golint-version`
 GOLINT_VERSION ?= v2.1.5