[U-Boot] DM_SPI, DM_SPI_FLASH due 2018.09

[Adam Ford]

Tom / Jagan,

Per MIGRATION.txt, (dated 14 March 2018) it shows the deadline for
CONFIG_DM_SPI and CONFIG_DM_SPI_FLASH to be 2018.09 which is already
in RC1 status.

This document also lists some boards which were partially converted
and some boards which have not yet started.

Is there an update on what's left for the partially converted boards,
and are the remaining boards going to be removed?

I  know some people are scrambling to hit the CONFIG_BLK requirement.

thanks,

adam