K 10 svn:author V 6 andrew K 8 svn:date V 27 2018-10-21T15:43:20.110938Z K 7 svn:log V 232 Split out the virtio mmio FDT attachment and add an ACPI attachment. This allows the memory mapped I/O virtio driver to attach when we boot with ACPI tables, for example in some cases with QEMU emulating arm64. MFC after: 1 month END