drm/amd/pm: Add reset option for fan_ctrl on smu 13.0.7

Add reset option for fan_ctrl interfaces on the smu v13.0.7
User can use command "echo r > interface_name" to reset the
interface to boot value

Signed-off-by: Ma Jun <Jun.Ma2@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>