armvirt: enable MMIO_CMDLINE_DEVICES for firecracker support
This Kernel option allows to run OpenWrt witin a `firecracker` micro VM.
Firecracker is a KVM-based tool for superfast booting VMs on x86_64 and
aarch64. It makes rootfs available to the guest as a virtio-mmio device
and passes its address via the kernel cmdline. A kernel without
CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES will not recognize the rootfs
virtio-mmio device.
Suggested-by: Packet Please <[email protected]>
Signed-off-by: Paul Spooren <[email protected]>
Paul Spooren