KVM: arm64: Correct test for ICH_HCR_EL2_TDIR cap for GICv5 hosts

KVM: arm64: Correct test for ICH_HCR_EL2_TDIR cap for GICv5 hosts

The original order of checks in the ICH_HCR_EL2_TDIR test returned
with false early in the case where the native GICv3 CPUIF was not
present. The result was that on GICv5 hosts with legacy support -
which do not have the GICv3 CPUIF - the test always returned false.

Reshuffle the checks such that support for GICv5 legacy is checked
prior to checking for the native GICv3 CPUIF.

Signed-off-by: Sascha Bischoff <sascha.bischoff@arm.com>
Fixes: 2a28810cbb8b2 ("KVM: arm64: GICv3: Detect and work around the lack of ICV_DIR_EL1 trapping")
Link: https://patch.msgid.link/20251208152724.3637157-4-sascha.bischoff@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>