vfio: Include "exec/address-spaces.h" directly in the source file

vfio: Include "exec/address-spaces.h" directly in the source file

No declaration of "hw/vfio/vfio-common.h" directly requires to include
the "exec/address-spaces.h" header.  To simplify dependencies and
ease the upcoming cleanup of "exec/address-spaces.h", directly include
it in the source file where the declaration are used.

Signed-off-by: Philippe Mathieu-Daudé <[email protected]>
Message-Id: <20180528232719[email protected]>
Acked-by: Michael S. Tsirkin <[email protected]>
Acked-by: Cornelia Huck <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>