virtio: fix test build after uio.h change

#define PAGE_MASK (~(PAGE_SIZE-1))

#define PAGE_ALIGN(x) ((x + PAGE_SIZE - 1) & PAGE_MASK)

/* generic data direction definitions */

#define READ                    0

#define WRITE                   1

typedef unsigned long long phys_addr_t;

typedef unsigned long long dma_addr_t;

typedef size_t __kernel_size_t;