linux-phytec-fsl

KVM: rename __kvm_io_bus_sort_cmp to kvm_io_bus_cmp

This is the type-safe comparison function, so the double-underscore is
not related.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>