Fix problems with the OFW console which happen when the system goes into single-user mode (as seen on sparc64 and PPC).  Problems were due to a minor oversight in the changes committed in revision 1.25.
Fix problems with the OFW console which happen when the system goes
into single-user mode (as seen on sparc64 and PPC).  Problems were due
to a minor oversight in the changes committed in revision 1.25.

Submitted by:	grehan
Tested by:	gad & yongari

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