powerpc/pseries: Fix compile of memory hotplug without CONFIG_MEMORY_HOTREMOVE
powerpc/pseries: Fix compile of memory hotplug without CONFIG_MEMORY_HOTREMOVE

51925fb3c5 "powerpc/pseries: Implement memory hotplug remove in the kernel"
broke compile when CONFIG_MEMORY_HOTREMOVE is not defined due to missing
symbols. This fixes the issue by adding the missing symbols.

Signed-off-by: Alexey Kardashevskiy <ac1fc56530d7d037e1ea666f130daca22d72f964@ozlabs.ru>
Acked-by: Nathan Fontenot <4b7bfe500077bf77c5456931a34b0b70e36e0bc6@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <864f124608374e06e4da1fa5d2e47ed839b95411@ellerman.id.au>

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