git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6838 35acf78f-673a-0410-8e92-d51de3d6d3f4
Fixed __WFI in __WFI().

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6839 35acf78f-673a-0410-8e92-d51de3d6d3f4