use linaro and lkconfig
add scripts to support imoseyon/leanKernel

picked from:

  - https://github.com/imoseyon/leanKernel-note3/commit/a66f9bbc5940aded0a23761ca02f931854a8d141#diff-a86de7cdf475671f039730c2b713b7ab
  - https://github.com/imoseyon/leanKernel-note3/commit/35d5b342248572d14cf7cb6d045ffb81b528203e#diff-a86de7cdf475671f039730c2b713b7ab

ps2:update copy location & new lkconfig
Change-Id: I11ef6cb603210137e763c5f4b14a3914de0c59e4