[meta-xilinx] linux-dtb.inc

[Philip Balister]

OE-core and meta-xilinx both have linux-dtb.inc files, but they are
different.

https://github.com/Xilinx/meta-xilinx/blob/master/recipes-kernel/linux/linux-dtb.inc

and

http://git.openembedded.org/openembedded-core/tree/meta/recipes-kernel/linux/linux-dtb.inc

Understanding how these work is not something I am good at, but I am
concerned when I see a BSP doing something similar but different to the
core layers. What are the chances we can understand the differences and
see about consolidating the differences in oe-core?

Philip