This is a quick and low risk fix. Those APIs which
are exposed to other IPs or to support sysfs/hwmon
interfaces or DAL will have lock protection. Meanwhile
no lock protection is enforced for swSMU internal used
APIs. Future optimization is needed.

V2: strip the lock protection for all swSMU internal APIs
Signed-off-by: NEvan Quan <evan.quan@amd.com>
Acked-by: NAndrey Grodzovsky <andrey.grodzovsky@amd.com>
Acked-by: NFeifei Xu <Feifei.Xu@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>