building 2.6.22 for powerpc 8548

I've downloaded 2.6.22 from kernel.org, and want to compile the kernel for an MPC8548 target. I'm using the freescale-4.1 cross compiler. This compiler seems to need ARCH=ppc - where as the 2.6.22 kernel needs ARCH=powerpc.... How can i resolve this conflict and build 2.6.22 for my MPC8548 target.

thanks for all the help.

bob