katsu is also known as ASUS Chromebook Detachable CZ1.

Let katsu and kakadu set its own touchscreen and panel compatible. Remove
these setting from the common dtsi for readability.
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>