All of these callbacks use mon_get_cpu_env(). Pass the Monitor
pointer to them it in preparation for adding a monitor argument to
mon_get_cpu_env().

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20201113114326.97663-3-kwolf@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>