Revert "ARC: minor update on architecture state reporting"

This reverts commit 0f40d69eb97b44e8ded56f55700896f10577a8ec.

I suppose it was useful during initial development. But now I would
like to avoid any changes in upstream code.

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>
ARC: Fix copyright headers

OpenRisc header has been used as a template.

Signed-off-by: Anton Kolesov <anton.kolesov@synopsys.com>