[PATCH v2 11/11] timer: Add a migration message

[Simon Glass]

Some boards still use the old timer mechanism. Set a deadline for them to
update to driver model.

This needs a bit of a strange rule to avoid an error on some boards.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

(no changes since v1)

 Makefile                               | 4 ++++
 doc/develop/driver-model/migration.rst | 8 ++++++++
 2 files changed, 12 insertions(+)

Applied to u-boot-dm/next, thanks!