KVM: x86/tdp_mmu: Take struct kvm in iter loops

KVM: x86/tdp_mmu: Take struct kvm in iter loops

Add a struct kvm argument to the TDP MMU iterators.

Future changes will want to change how the iterator behaves based on a
member of struct kvm. Change the signature and callers of the iterator
loop helpers in a separate patch to make the future one easier to review.

Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Message-ID: <20240718211230.1492011-8-rick.p.edgecombe@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>