board: kontron: Remove <common.h> and add needed includes

Remove <common.h> from this board vendor directory and when needed
add missing include files directly.

Acked-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Acked-by: Michael Walle <michael@walle.cc>
Signed-off-by: Tom Rini <trini@konsulko.com>
9 files changed