Fix __FIO_OPT_G_ISCSI numbering

__FIO_OPT_G_NR must always be last, if it isn't then it doesn't
denote the last used bit.

Fixes: 247ef2aaf28a ("fio: add libiscsi engine")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
1 file changed