This adds an option to build with internal toolchain. This can be used
to build targets which are currently not build by the OpenWrt build bots
and which needs their own toolchain build for every build.
Building the toolchain takes about 30 minutes compared to using the
external toolchain which takes some seconds.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit 08f5283392)
Extract the building of OpenWrt into an own workflow which is then
triggered by the kernel.yml and packages.yml workflow with different
inputs. This allows us to share much of the code of the workflow.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
(cherry picked from commit 7c406a5f08)