XGMI Memory sharing will be disbaled by default for security reason after
boot up, it depends on driver to enable the memory sharing
Signed-off-by: Nshaoyunl <shaoyun.liu@amd.com>
Acked-by: NEvan Quan <evan.quan@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>