populate_sdk_ext: Introduce mechanism to keep nativesdk* sstate in esdk
When doing a devtool build-sdk from within an esdk all nativesdk
components would be rebuilt. This patch introduces SDK_INCLUDE_NATIVESDK
flag to toggle the inclusion of nativesdk packages when creating the
esdk sstate
Currently locked-sigs.inc is generated during do_sdk_depends which
doesn't pull in nativesdk packages. Generating another locked-sigs.inc
in do_populate_sdk_ext and pruning it to only nativesdk* packages by
using a modified version of the already existing function
prune_locked_sigs and merging it with the current locked-sigs.inc
Also adding SDK_INCLUDE_NATIVESDK tasklistfn to the logic surrounding
setting tasklist file to not prune esdk sstate during creation
[YOCTO #13261]
Signed-off-by: Jaewon Lee <jaewon.lee@xilinx.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
