use attr_update if its available as part of the attribute.
default_attr_update was used even if attr->attr_update is true.
Signed-off-by: NSathishkumar S <sathishkumar.sundararaju@amd.com>
Reviewed-by: NShashank Sharma <Shashank.sharma@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>