[U-Boot] flex, bison needed

[Chris Packham]

On Sat, 2 Jun 2018, 8:55 PM Alex Kiernan, <alex.kiernan at gmail.com> wrote:

> Not a problem per-se, but it tripped up my builds running against master...
>
> It looks like we now need flex and bison installed in order to build,
> whereas previously we shipped the generated files as part of the tree.
>


It's a kconfig thing a bit more of an explanation on the kernel mailing
list https://lkml.org/lkml/2017/12/9/95