tools/virtio: fix build

Fix the build caused by the following changes:
- phys_addr_t is now defined in tools/include/linux/types.h
- dev_warn_once() is used in drivers/virtio/virtio_ring.c
- linux/uio.h included by vringh.h use INT_MAX defined in limits.h

Signed-off-by: Stefano Garzarella <[e-mail]>
Message-Id: <[e-mail]>
Signed-off-by: Michael S. Tsirkin <[e-mail]>
Acked-by: Eugenio Pérez <[e-mail]>
Signed-off-by: Peng Fan <[e-mail]>
Acked-by: Jason Wang <[e-mail]>

tools/virtio/linux/kernel.h

···
 #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;
 typedef unsigned int __wsum;
···
 #endif
 #define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
 #define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
+#define dev_warn_once(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
 
 #define min(x, y) ({				\
 	typeof(x) _min1 = (x);			\

tools/virtio/linux/vringh.h

···
+#include <limits.h>
 #include "../../../include/linux/vringh.h"