[IA64] SMP_HOST: map pal code on smp host

[IA64] SMP_HOST: map pal code on smp host

On up host, only when rr7 is changed, efi_map_pal_code() is called to
remap pal code on new rr7. But on smp host, efi_map_pal_code is also
called to map pal code for other processors, which may not satisfy rr7
change condition, thus pal code may not be mapped in some processors,
while ia64_pal_halt_light called in startup_cpu_idle_loop will cause
machine crash.

Signed-off-by: Anthony Xu <anthony.xu@intel.com>