From: Stephen Rothwell <sfr@canb.auug.org.au>

This patch lets 2.6.3-rc4 build and boot on an PPC64 iSeries box (at least
for my configuration).  The veth.o bit in the networking Makefile got there
by accident and should be removed anyway ...

There is more to make it work properly (note the "Temporary hack"), but
this gets us closer.