[meta-intel] Use of overrides in linux-yocto bbappends

[Paul Eggleton]

Hi folks,

Koen reported that with a recent change to meta-minnow where LINUX_VERSION = 
"something" changed to LINUX_VERSION_minnow = "something" (which was a good 
change), the result was that the version of the linux-yocto kernel packages 
for an unrelated machine in another layer went backwards, because the value 
that was previously leaking over into that machine's kernel recipe wasn't 
anymore.

This in itself is OK, since the change was to make the append set the variable 
correctly. However it prompted me to look through meta-intel to see how we're 
setting LINUX_VERSION. I see there are a number of bbappends for linux-yocto* 
recipes that set LINUX_VERSION with no machine override; we need to stop doing 
this. I can throw together a patch to fix it, but we'll also need to make sure 
new BSPs added in future use overrides as well. Any suggestions on how to 
handle the latter? Is this a documentation issue?

Cheers,
Paul

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Paul Eggleton
Intel Open Source Technology Centre