KVM: PPC: Handle magic page in kvmppc_ld/st

We use kvmppc_ld and kvmppc_st to emulate load/store instructions that may as
well access the magic page. Special case it out so that we can properly access
it.

Signed-off-by: Alexander Graf <agraf@suse.de>

diff --cc arch/powerpc/include/asm/kvm_book3s.h
Simple merge

diff --cc arch/powerpc/include/asm/kvm_booke.h
Simple merge

diff --cc arch/powerpc/kvm/powerpc.c
Simple merge