KVM: Trace failed msr reads and writes

Record failed msrs reads and writes, and the fact that they failed as well.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

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

diff --cc arch/x86/kvm/trace.h
Simple merge

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