add support for power8 to xcompile script

power8 is set up by ibm as a powerpc subset, so we follow
that rule here: we call it a powerpc but require -mcpu=power8

Change-Id: Ib5212be22db9584b0dc0eeed5c06ec1924347067
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: https://review.coreboot.org/12624
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
1 file changed