KVM: PPC: Move EXIT_DEBUG partially to tracepoints

We have a debug printk on every exit that is usually #ifdef'ed out. Using
tracepoints makes a lot more sense here though, as they can be dynamically
enabled.

This patch converts the most commonly used debug printks of EXIT_DEBUG to
tracepoints.

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

diff --cc arch/powerpc/kvm/book3s.c
Simple merge

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