This adds a recipe for dtschema package developed by Rob Herring for
easy validation of YAML device-tree files in the linux kernel.
The version is current git as the only release so far - v0.1 - is old
and doesn't work with kernel's dt_binding_check make target.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
