260d80f42d Update ns_nvm_helper license text and format (#98)
git-subtree-dir: features/frameworks/nanostack-libservice
git-subtree-split: 260d80f42da24fa41656222294abc38f7779bdcf
Nanostack related files moved under 'feature/nanostack'
Common libraries moved to 'features/frameworks'
Allow FEATURE_COMMON_PAL still to be defined in the build so
that we don't break any builds.