BugLink: http://bugs.launchpad.net/bugs/1570124

A patch later in this series allocates child nodes
in this resource tree.  For that to work, this tree
needs to be sorted in ascending order.
Signed-off-by: Jake Oshins <jakeo@microsoft.com>
Signed-off-by: Joseph Salisbury <joseph.salisbury@canonical.com>
Reference: https://lkml.org/lkml/2016/4/5/941Acked-by: Brad Figg <brad.figg@canonical.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>