Use MFST GUID instead of AMD GUID
The MFST GUID turns out to be a better choice as its used by Windows as well.
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2158310
Tested: To be performed by partner
Signed-off-by: David Arcari darcari@redhat.com
Edited by David Arcari