The string " error\n" appears in each error string. Move it out to a
common place.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NMarek Vasut <marex@denx.de>

The existing function is long and most of the code is indented a long
way. Before adding yet more code, split this out into its own function.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de> (v1)

This is the main entry point to the FIT image verification code. We will
be using it to handle image verification with signatures, so rename the
function.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NMarek Vasut <marex@denx.de>

This code is never compiled into U-Boot, so move it into a separate
file in tools/ to avoid the large #ifdef.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NMarek Vasut <marex@denx.de>

The FIT code is about half the size of the >3000-line image.c. Split this
code into its own file.
Signed-off-by: NSimon Glass <sjg@chromium.org>
Reviewed-by: NMarek Vasut <marex@denx.de>