Fix following build error with musl libc:
app/test/test_eal_flags.c:152:55: error:
'O_RDONLY' undeclared (first use in this function)
fd = openat(dirfd(hugepage_dir), dirent->d_name, O_RDONLY);
^~~~~~~~
Fixes: 45f1b6e868 ("app: add new tests on eal flags")
Cc: stable@dpdk.org
Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
816d76c53e