UPSTREAM: KVM: arm64: Add missing HFGxTR_EL2 FGT entries to nested virt

Add the missing nested virt FGT table entries HFGxTR_EL2. Based
on DDI0601 2023-09.

Bug: 278749606
Change-Id: I8de6354f138ee3acff830cc21fc57cee7b536096
Signed-off-by: Fuad Tabba <tabba@google.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20231214100158.2305400-7-tabba@google.com
(cherry picked from commit 9d400eb7)