Use the new common code to load a ramdisk. The functionality should not
change.

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

At present code to load an image from a FIT is duplicated in the three
places where it is needed (kernel, fdt, ramdisk).

The differences between these different code copies is fairly minor.
Create a new function in the fit code which can handle any of the
requirements of those cases.

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

This code is very large, and in SPL it isn't always useful to print
out image information (in fact there might not even be a console
active). So disable this feature unless this option is set.

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

There are only two left. One is unnecessary and the other can be moved
to the header file.

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

This function will be used to print signatures as well as hashes, so rename
it. Also make it static since it is not used outside this file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

This function will be needed by signature checking code, so export it,
and also add docs.

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

The string " error\n" appears in each error string. Move it out to a
common place.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek 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: Simon 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: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek 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: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek 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: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>