Alberto Panizzo authored Jul 12, 2018 and Marek Vasut committed Aug 08, 2018

This command is part of the write partition sequence performed by
rkdeveloptool: one partition is first completely erased and
than wrote.

Signed-off-by: Alberto Panizzo <alberto@amarulasolutions.com>
Reviewed-by: Simon Glass <sjg@chromium.org>