repo: Add meta-seco-rockchip layer.

This layer adds oniro build configurations for Seco's reference
board Juno (SBC-D23), based on Rockchip processor PX30.

Thanks-to: Natalia Kovalenko <waykovalenko@gmail.com>

Relate-to: #4
Relate-to: https://booting.oniroproject.org/rzr/meta-oniro-blueprint-flutter/-/issues/4


Signed-off-by: Philippe Coval <philippe.coval.ext@huawei.com>

default.xml

@@ -59,4 +59,5 @@ SPDX-FileCopyrightText: Huawei Inc.
 
 	<project name="meta-flutter/meta-flutter" remote="github" revision="kirkstone" path="meta-flutter" />
 	<project name="ndechesne/meta-qcom" remote="github" revision="2248b71f01f0da6cc7f73f44f5a848f83eae307a" path="meta-qcom" />
+	<project name="pub/rockchip/meta-seco-rockchip" remote="seco" revision="master" path="meta-seco-rockchip" />
 </manifest>