[MIPS] IP27: Allow SMP ;-) Another changeset messed up by patch.

When lmo commit 4ef893e0515e8bf336dfbd200884f244869fbb43 was merged to
kernel.org as e73ea273 patch happily
applied the IP27 segment to IP22.  f63f36c18b11e166d0f362ac04dbcd7e6ea23f9e
did fix the effects partially - and with a wrong log message.  Now fixed
for real (tm).

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>