KVM: emulator: Fix io permission checking for 64bit guest

Current implementation truncates upper 32bit of TR base address during IO
permission bitmap check. The patch fixes this.

Reported-and-tested-by: Francis Moreau <francis.moro@gmail.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

diff --cc arch/x86/include/asm/kvm_emulate.h
Simple merge

diff --cc arch/x86/kvm/emulate.c
Simple merge

diff --cc arch/x86/kvm/x86.c
Simple merge