KVM: fix spectrev1 gadgets

[ Upstream commit 1d487e9bf8ba66a7174c56a0029c54b1eca8f99c ]

These were found with smatch, and then generalized when applicable.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
4 files changed