x86/dmi_scan: only honor end-of-table for 64-bit tables

x86/dmi_scan: only honor end-of-table for 64-bit tables

A 32-bit entry point to a DMI table says how many structures the table
contains. The SMBIOS specification explicitly says that end-of-table
markers should be ignored if they are not actually at the end of the
DMI table. So only honor the end-of-table marker for tables accessed
through 64-bit entry points, as they do not specify a structure count.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
[Linux commit 17cd5bd5391e6e7b363d66335e1bc6760ae969b9]
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Andrew Cooper <andrew.cooper3@citrix.com>
Release-acked-by: Wei Liu <wei.liu2@citrix.com>