test-runner: Use LKROOT

Use LKROOT as the root path of the lk sources.

Bug: 285203365
Test: Build and run com.android.kernel.timertest
Change-Id: I0acade2ee847fe58872905d477128f8ed1d3f6a2
1 file changed
tree: a7167322f56ac154e2a254c7078d8f8131eec364
  1. interface/
  2. ql-tipc/
  3. test-runner/
  4. .clang-format
  5. PREUPLOAD.cfg