OpenBSD/src LFTyqcdusr.sbin/vmd ns8250.c

   Fully reinstate revision 1.21.  Apparently, revision 1.22 (part of
   the "Fix at least one cause of VMs spinning at 100% host CPU" commit)
   accidentally included some pieces of a different WIP.  These pieces
   remained in the tree after the revert and caused vmd to busy loop
   after attaching to and detaching from a VM's console.

   "please commit" mlarkin
VersionDeltaFile
1.24+15-27usr.sbin/vmd/ns8250.c
+15-271 files

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