This sort of reverts the addition of lfsr_bd_unprog, but with a slightly
better API. lfsr_bd_unprog was too much of a hack, and isn't really
generalizable. The align flag isn't necessarily any better, but at least
it's the simplest/least-confusing solution available.
And it's net savings, code-wise:
code stack lfs_t
before: 33690 2608 164
after: 33678 (-0.0%) 2600 (-0.3%) 160 (-2.4%)
Christopher Haster
50fc0ed680