uboot-phytec

dm: MIGRATION: Add migration plan for WDT (DM watchdog support)

As much of the watchdog system has been migrated to DM now, formalize a
deadline for migration.

Please note that the old CONFIG_HW_WATCHDOG macro should be removed
completely at some point.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>