dt-bindings: Add DT bindings to support compute bound logic

This patch adds the DT bindings to specify compute bound logic
in 'compatible' field so that this functionality can be rolled
over in to memlat governor.

Change-Id: I43df33839880329c0ad37b8a8178a6cf60fc1148
Signed-off-by: Rama Aparna Mallavarapu <aparnam@codeaurora.org>