test/io_uring_register: Expect ENOMEM or EFAULT from __sys_io_uring_register
test/io_uring_register: Expect ENOMEM or EFAULT from __sys_io_uring_register

The code was only handling ENOMEM, but the function was getting an
EFAULT, which a later print mentions as being an expected value anyway.

Signed-off-by: Guillem Jover <6f269179bd29909dac5e2359bafef574d0759c09@hadrons.org>

axboe/liburing,axboe/liburing,axboe/liburing