powerpc/book3e/kdump: Enable crash_kexec_wait_realmode
powerpc/book3e/kdump: Enable crash_kexec_wait_realmode

While book3e doesn't have "real mode", we still want to wait for
all the non-crash cpus to complete their shutdown.

Signed-off-by: Scott Wood <b77916c2feab81a70245e7b5671f4f02730ebf64@freescale.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs