Virtio_console usage of early printk

[François Diakhate]

Hi all,

As far as I can see, early_put_chars is not used by virtio_console
because it checks whether there is a port available before using it.
If I understand correctly, this makes it useless because once we have
a port, we can use the regular virtio transport to output things to
the console. Does the attached patch seem valid ? Feedback from s390
and powerpc users who use this functionality would be appreciated.

Thanks,
François
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