[KINETIS] Freescale Freedom K20D50M board

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7133 35acf78f-673a-0410-8e92-d51de3d6d3f4
[KINETIS] Style fix

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7134 35acf78f-673a-0410-8e92-d51de3d6d3f4
[KINETIS] Add basic K20 family support

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7135 35acf78f-673a-0410-8e92-d51de3d6d3f4
[KINETIS] Add K20x family port makefile

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7136 35acf78f-673a-0410-8e92-d51de3d6d3f4
[KINETIS] Add Freedom K20D50M demo

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7137 35acf78f-673a-0410-8e92-d51de3d6d3f4