KVM: ARM: Rename KVM_SET_DEVICE_ADDRESS

Renames the KVM_SET_DEVICE_ADDRESS to KVM_ARM_SET_DEVICE_ADDR
to make it obvious that this is ARM specific in lack of a better generic
interface.

Once we agree on a better interface the KVM/ARM code can also take
advantage of that, but until then we don't want to hold up the KVM/ARM
patches.

Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>