[KINETIS] Remove flash protection code from demo

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7221 35acf78f-673a-0410-8e92-d51de3d6d3f4
[KINETIS] Add flash protection defaults to HAL

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7222 35acf78f-673a-0410-8e92-d51de3d6d3f4
[KINETIS] Add USB registers

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@7223 35acf78f-673a-0410-8e92-d51de3d6d3f4