hw: move private headers to hw/ subdirectories.
Many headers are used only in a single directory. These can bekept in hw/.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
hw: move target-independent files to subdirectories
This patch tackles all files that are compiled once, movingthem to subdirectories of hw/.
hw: move virtio devices to hw/ subdirectories
hw: make subdirectories for devices
Prepare the new directory structure.