This fix impacts all boards that use extlinux.conf
I have tested the aml-s9xx-box build to ensure that this works as expected.
I think the only other boards that use extlinux.conf are those under
the media kernel
In testing I realized that I needed to add SRC_CMDLINE to the aml-s9xx-box
config file to get the correct append line added to the extlinux.conf file
Changes to be committed:
modified: config/boards/aml-s9xx-box.tvb
modified: config/sources/common.conf
0fc16bf556