[Buildroot] -E flag in apply-patches.sh

[Andrey Nechypurenko]

Hi Arnout,

> > I am wondering if there are any particular reasons to have the -E flag
> > and if it would make sense to remove it from the script?
>
>   I think that's purely historical, from back in the days when many patches were
> downloaded externally and some of them could be really odd.
>
>   I expect that none of the patches that we have now still need this. However,
> you should probably check:
>
>   - all patches in the buildroot tree;
>   - all patches downloaded from somewhere (git grep 'patch\|diff' -- \*.hash)

I looked through the patches and did not find anything suspicious (however,
no 100% guarantee :-) ). So would you consider removing the -E flag from the
script in the upcoming release?

Thanks,
Andrey.