Memory Summary shows no data in redfish branch

[DevipriyaS17]

Describe the bug
In redfish branch, the Memory Summary section under the Hardware Information tab shows no data

To Reproduce
Steps to reproduce the behavior:

1. Open console redfish branch
2. Connect to an AMT device
3. Navigate to Hardware Information
4. Check the Memory Summary section

Expected behavior
Memory details are displayed.

[sudhir-intc]

Fixed through #886