[MIPS] zs.c: Resurrect the deceased zs.c for now.
Maciej W. Rozycki authored

Not that it's meant to be sustained for long, but from time to time it's
useful to have some console...
Signed-off-by: default avatarMaciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: default avatarRalf Baechle <ralf@linux-mips.org>
0905780a