[yocto] Fixing devtool issue with kernel bbhappen do_patch recipe

[Yann CARDAILLAC]

Hi all,

We found a possible bug with boucman_work as mentionned in the IRC.

It seems that when using the SDK there's an issue with the generated file
workspace/appends/linux-yocto_4.18.bbappend (or equivalent depending on
kernel and distro).

In the do_patch rule, if some script are intended to be applied in another
language than python it will fail. I had the case with my BSP (phytec). We
had to change the rule with :

do_patch[noexec] = "1"

so that the rule is not executed which was what was probably intended with
the former :

do_patch() {
    :
}

Here's the patch we would use to fix that. It patch the scipt
scripts/lib/devtool/standard.py so that it properly generate the bbappend
file. Please, do not hesitate to give me any feedback on my patch.

Regards,

-- 
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