This patch renames the board directory from board/freescale to
board/nxp because NXP now provides Board Support Packages (BSPs) and
tools for the former Freescale i.MX and other i.MX products.

All relevant references have been updated accordingly. This change does
not affect functionality.

Signed-off-by: Alice Guo <alice.guo@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>

Use proper project name in README, rst and comment.
Done in connection to commit bb922ca3eb4b ("global: Use proper project name
U-Boot (next)").

Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Alexander Graf <graf@csgraf.de> (ppce500)
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/536af05e7061982f15b668e87f941cdabfa25392.1694157084.git.michal.simek@amd.com

Introduce i.MX8 container set configuration file and add example

Signed-off-by: Peng Fan <peng.fan@nxp.com>

This fixes two small typos in mxsimage.txt.

Signed-off-by: Michael Heimpold <mhei@heimpold.de>
Reviewed-by: Breno Lima <breno.lima@nxp.com>

Signed-off-by: Michael Heimpold <mhei@heimpold.de>
Reviewed-by: Breno Lima <breno.lima@nxp.com>

There is no need to have README in all i.MX documents name.
Remove README from i.MX docs name and add .txt file extension.

Signed-off-by: Breno Lima <breno.lima@nxp.com>
Reviewed-by: Ye Li <ye.li@nxp.com>

The following documents describe the image type used by the mkimage
tool to generate U-Boot images for i.MX devices.

- README.imximage
- README.mxsimage

Move all mkimage related document to doc/imx/mkimage for a better
directory structure.

Signed-off-by: Breno Lima <breno.lima@nxp.com>