power_mgmt: Make device_pm_ops definition static

DEFINE_DEVICE_PM macro was not defining device_pm_ops
as 'static'. Fixes the issue and impacted areas.

Jira: ZEP-639
Change-Id: I5e1de6af97bf7b2b690af0c81034ce167e655e43
Signed-off-by: Ramesh Thomas <ramesh.thomas@intel.com>
4 files changed