tree 171a833d29fd04ef99f71502d42cfa750c2b93aa
parent 75535b1a8e5da14f6e49d3928a48c5d886312564
author Brian Silverman <bsilver16384@gmail.com> 1536023822 -0700
committer Brian Silverman <bsilver16384@gmail.com> 1536023822 -0700

Switch to a new cortex-m4 compiler

This one is newer, so it supports a newer C++ standard. It's also
hermetic.

Also add a variant for building for some Kinetis-K chips with less RAM
that are used on fet12v2.

Change-Id: I9e50b6aae498e0c35acfedb846b3ada619a0e630