[PATCH 1/3] Add yyerrorf() for formatted error messages.

[Jon Loeliger]

So, like, the other day Scott Wood mumbled:
> 
> I forgot to tag them as such, but these are of course dtc patches and
> not Linux patches.

All three applied (to DTC :-)).

Will you follow up with a patch for /bininc/ or /bin-include/
as well now?  (I'm fine with either, and I forget where David's
preference there landed.)

Thanks,
jdl