KVM: PPC: BOOKE: Guest and hardware visible debug registers are same

Guest visible debug register and hardware visible debug registers are
same, so ther is no need to have arch->shadow_dbg_reg, instead use
arch->dbg_reg.

Signed-off-by: Bharat Bhushan <Bharat.Bhushan@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

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

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

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