linux-headers: Update to Linux v6.19-rc1

linux-headers: Update to Linux v6.19-rc1

Mainly for adding support for VFIO DMABUF. While at it, update all
headers.

The header update breaks virtio-net due to virtio_net_hdr_v1_hash
changes. Include the virtio-net changes to avoid build and bisect
failures.

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Shameer Kolothum <skolothumtho@nvidia.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20260121114111.34045-2-skolothumtho@nvidia.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>