This patch adds devicetree for intel-ixp42x-welltech-epbx100.

Link: https://lore.kernel.org/r/20210504193457.4008384-6-clabbe@baylibre.comSigned-off-by: Corentin Labbe <clabbe@baylibre.com>
Signed-off-by: Olof Johansson <olof@lixom.net>