[PATCH 1/2] virtio: console: Add early writeonly register to config space

[Rusty Russell]

Pranavkumar Sawargaonkar <pranavkumar at linaro.org> writes:
> This patch adds a early_wr register (writeonly) in config space of virtio console device which can be used for debugging.
>
> The patch also updates virtio-spec in Documentation to reflect this feature addition in virtio console.

Perhaps change the name to VIRTIO_CONSOLE_F_EMERGENCY_WRITE.  But let's
resolve the qemu discussion first...

Cheers,
Rusty.