In some cases we want to show a signed value to the user without needing
to use the full printf() implementation. Add a new version of the
simple_itoa() function to handle this.
Update the existing function to use ulong instead of long, to avoid
confusion about which it actually uses.
Series-to: u-boot
Cover-letter:
Test improvements
This includes some small abuf and test improvements.
END
Signed-off-by: Simon Glass <sjg@chromium.org>
569681e993