lpm-levels: Call into scheduler to indicate dstate level

Let scheduler know about current cluster dstate to allow scheduler to
make better decision on the cost of placing a task on a cpu in a
cluster.

Change-Id: Ia5a3e4492163d8e2baf16e561e1bed136b54e5ad
Signed-off-by: Olav Haugan <ohaugan@codeaurora.org>