fix build on musl libc
fix build on musl libc

Trying to build liburing on musl yields an error:

make[1]: Entering directory '/work/devel/liburing/src'
     CC setup.ol
     CC queue.ol
     CC syscall.ol
In file included from syscall.c:9:
include/liburing/compat.h:6:2: error: unknown type name 'int64_t'
    6 |  int64_t  tv_sec;
      |  ^~~~~~~
make[1]: *** [Makefile:43: syscall.ol] Error 1
make[1]: Leaving directory '/work/devel/liburing/src'
make: *** [Makefile:12: all] Error 2

Ensure that compat.h includes stdint.h.

Signed-off-by: Milan P. Stanić <75dc00eb25cc5f30a6d6becef9d51e4987970f23@arvanta.net>
Signed-off-by: Jens Axboe <cd8c6775e60d6f67a6984377324e5290df3d5358@kernel.dk>

axboe/liburing,axboe/liburing,axboe/liburing