Implement constraint API as weak symbols so applications or platform
can override them. Constraints are a high-level abstraction to inhibit
the power subsystem of using certain power states. Some platforms can
have their own way to set/release constraints in their drivers that
are not part of Zephyr's code base.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
Policy manager header has to be in the include for applications.
Also it had several function prototypes that are not part of the policy.
These functions were moved from the policy header to a dedicated private
header.
Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
