With the fixes to getty handling of non-existent devices a default install now complains about ttyu0/ttyu1 not existing at boot time. Since users wanting the uart based devices as terminals will need to do something special to get them anyway set it up so a default config doesn't complain.
With the fixes to getty handling of non-existent devices a default
install now complains about ttyu0/ttyu1 not existing at boot time.
Since users wanting the uart based devices as terminals will need
to do something special to get them anyway set it up so a default
config doesn't complain.

MFC after:	3 days

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