KVM: Rename KVMMemoryListener.nr_used_slots to nr_slots_used

This will make all nr_slots counters to be named in the same manner.

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/20240917163835.194664-4-peterx@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2 files changed