tests: match kernel and pass fds in s32[]
tests: match kernel and pass fds in s32[]

Follow the kernel ABI and pass fds in an array of s32 but not just ints.

Signed-off-by: Pavel Begunkov <8608d41fe50396a9dbd36e830be65ba791e26c05@gmail.com>
Link: https://lore.kernel.org/r/260526556a2a44c833e2265ba59e5d2705ce8870.1632507515.git.8608d41fe50396a9dbd36e830be65ba791e26c05@gmail.com
Signed-off-by: Jens Axboe <cd8c6775e60d6f67a6984377324e5290df3d5358@kernel.dk>

axboe/liburing,axboe/liburing,axboe/liburing