DECstation fails to compile with iomap patch applied

[Martin Michlmayr <tbm@cyrius.com>]

DECstation fails to compile when your iomap patch is applied.  (FWIW,
DECstations don't have PCI at all, only TurboCHANNEL).

  CC      arch/mips/lib/iomap.o
arch/mips/lib/iomap.c: In function ‘pci_iomap’:
arch/mips/lib/iomap.c:66: error: ‘_CACHE_CACHABLE_COW’ undeclared (first use in 
this function)
arch/mips/lib/iomap.c:66: error: (Each undeclared identifier is reported only 
once
arch/mips/lib/iomap.c:66: error: for each function it appears in.)
make[1]: *** [arch/mips/lib/iomap.o] Error 1

-- 
Martin Michlmayr
http://www.cyrius.com/