Introduce framework to build SYSFW and config data into an ITB

In order to be able to consume system firmware (SYSFW) as well as the
associated configuration data from the boot media introduce a framework
that allows building the SYSFW image itself as well as the different
domain-specific configuration fragments (board, pm, rm, and sec) into an
image tree blob (ITB) file called sysfw.itb.

To establish a known-good starting point for development and testing use
U-Boot commit 7501705610 ("arm: K3: am654: Update board config for
v2018.07a enforcement in 2018.08 release of sysfw") as a baseline for the
AM654x board configuration data. Furthermore integrate SYSFW v2018.08b as
released on 09/12/2018 by way of download URL.

See included README.md for a more complete description.

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
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+*.o
+*.bin
+*.its
+*.itb