Revert "KVM: x86: Manually calculate reserved bits when loading PDPTRS"

Revert "KVM: x86: Manually calculate reserved bits when loading PDPTRS"

BugLink: https://bugs.launchpad.net/bugs/1851709
This reverts commit c5d574d63996442c80e886c60278a790230f4d2b.

This commit has caused failure to launch 64-bit linux VMs when kvm-intel
ept module parameter is off. It is off by default on old Intel CPUs.

Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Acked-by: Tyler Hicks <tyhicks@canonical.com>
Acked-by: Andrea Righi <andrea.righi@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>