Commit 488445cefa1 ("doc: Move FIT into its own directory") moved the
documentation in doc/uImage.FIT to doc/usage/fit, subsequently all
documents and example sources have been converted to reStructuredText.

Fix (almost) all of the remaining occurrences of the old path and
filenames across the tree.

The exception is doc/uImage.FIT/command_syntax_extensions.txt which
apparently has been removed entirely, or at least I was unable to
locate where that document is now.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

The `fitupd' command is not used by any board. The `dfu tftp' command
provides the same capabilities.

So let's drop the `fitupd' command.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

Signed-off-by: Vagrant Cascadian <vagrant@debian.org>
Reviewed-by: Joe Hershberger <joe.hershberger@ni.com>

Documentation file for DFU extension. With this functionality it is now
possible to transfer FIT images with firmware updates via TFTP and use
DFU backend for storing them.

Signed-off-by: Lukasz Majewski <l.majewski@majess.pl>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

Command calls update_tftp() analogous to automatic update described
in doc/README.update.

Usage:
fitupd [addr]
        - run update from FIT image at addr
          or from tftp 'updatefile'

Signed-off-by: Andreas Pretzsch <apr@cn-eng.de>

Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>

The auto-update feature allows to automatically download software updates
from a TFTP server and store them in Flash memory during boot. Updates are
contained in a FIT file and protected with SHA-1 checksum.

More detailed description can be found in doc/README.update.

Signed-off-by: Rafal Czubak <rcz@semihalf.com>
Signed-off-by: Bartlomiej Sieka <tur@semihalf.com>