Add a simple test for LFSR generator

Adds a simple test suite to check the speed of the LFSR
generator and verify its results. Just run:

    make t/lfsr-test
    ./t/lfsr-test

to compile the test suite and print its usage

Signed-off-by: Alex Pyrgiotis <apyrgio@grnet.gr>

 create mode 100644 t/lfsr-test.c
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2 files changed