add .BoardConfig.mk package-file

hc

2023-05-31 43fd8d44e8182b691c8ee61d487cec02ca11afd2

1
2
# Locally computed:
sha256  0b25218ae7b46a967db42f2a53721645b3d42874a65f9552ad16ce26d30f51f2  scons-2.5.1.tar.gz