[meta-freescale] Using a defconfig refers to an in-tree defconfig file

[John Weber]

I thought I would bounce this one of the mailing list.

Is there any reason why we shouldn't simply use the defconfig from the kernel 
tree if appropriate?

We would do this by the defconfig file in the recipe refer to a filename in the 
kernel tree. For example, in the file 
recipes-kernel/linux/linux-wandboard-3.10.17/defconfig would be a single line:

    use-kernel-config=wandboard_defconfig

I've tested this already and it works.

As many of the kernels being used here are managing their own defconfigs 
in-tree, they are forced to keep the defconfig in the metadata in-sync.  This 
would be a way to remove that requirement.