powerpc/pseries: Call pseries_kexec_setup only on pseries

The pseries_kexec_setup function overwrites some ppc_md
pointers, so make sure it only gets called when running on
the right architecture.

Signed-off-by: Arnd Bergmann <[e-mail]>
Signed-off-by: Paul Mackerras <[e-mail]>

arch/powerpc/platforms/pseries/kexec.c

···
 
 	return 0;
 }
-__initcall(pseries_kexec_setup);
+machine_device_initcall(pseries, pseries_kexec_setup);