x86/pvh: do not forward MADT Local APIC NMI structures to dom0

x86/pvh: do not forward MADT Local APIC NMI structures to dom0

Currently Xen will passthrough any Local APIC NMI Structure found in
the native ACPI MADT table to a PVH dom0.  This is wrong because PVH
doesn't have access to the physical local APIC, and instead gets an
emulated local APIC by Xen, that doesn't have the LINT0 or LINT1
pins wired to anything.  Furthermore the ACPI Processor UIDs used in
the APIC NMI Structures are likely to not match the ones generated by
Xen for the Local x2APIC Structures, creating confusion to dom0.

Fix this by removing the logic to passthrough the Local APIC NMI
Structure for PVH dom0.

Fixes: 1d74282c45 ('x86: setup PVHv2 Dom0 ACPI tables')
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
master commit: b39e6385250ccef9509af0eab9003ad5c1478842
master date: 2022-12-02 10:33:40 +0100