dt-bindings: Drop required 'interrupt-parent'

'interrupt-parent' is never required as it can be in a parent node or a
parent node itself can be an interrupt provider. Where exactly it lives is
outside the scope of a binding schema.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Bartosz Golaszewski <brgl@bgdev.pl>
Link: https://lore.kernel.org/r/20220107031905.2406176-1-robh@kernel.org

dt-bindings: net: lantiq: Add the burst length properties

The new added properties are used for configuring burst length.

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>

dt-bindings: net: lantiq,etop-xway: Document Lantiq Xway ETOP bindings

Document the Lantiq Xway SoC series External Bus Unit (ETOP) bindings.

Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>