This renames the dcdofs config option in the imx-image tool to ivtofs.  dcdofs
is a misnomer. The DCD (Device Configuration Data) is only one part of the data
linked into the IVT (Image Vector Table), but the meaning of the option is
really the latter, not the former.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

The max_load_size option makes sure that only the portion of the image
is loaded to SRAM that fits into it.

Note this does not cover the whole available SRAM area for all boards,
for the bigger SRAM areas only a part is chosen that is enough to fit
the initial loader in.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

The cm-fx6 board is a module from Compulab with different i.MX6 SoCs.
This module is also found in the Utilite Mini Computer this patch
also adds support for.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>