Failed to compile due to missing <linux/blkdev.h> header with liburing-2.9?

[Qu Wenruo <quwenruo.btrfs@xxxxxxx>]

Hi,

Just find out that fsstress no longer compiles on for-next (v2025.02.02)
, patches-in-queue (a494849fb48dc6b276c2a1784d6ff66c731e5572) nor master
branchs (8467552f09e1672a02712653b532a84bd46ea10e)
All fails with the following error:

```
Building ltp
    [CC]    fsstress
In file included from /usr/include/liburing.h:17,
                 from fsstress.c:30:
/usr/include/liburing/compat.h:11:10: fatal error: linux/blkdev.h: No
such file or directory
   11 | #include <linux/blkdev.h>
      |          ^~~~~~~~~~~~~~~~
```

This seems to be a change in the liburing headers, as v2.8 still
compiles fine.

Is there something wrong with header change?

Thanks,
Qu