pm: Better return type for pm_system_suspend

Instead of returning PM_STATE_ACTIVE for when the cpu didn't enter a
low power state and a different state when it entered, but has
already left the state and is active again, it changes
pm_system_suspend to return true when the cpu has entered a low power
state and false otherwise.

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
4 files changed