sama5d3_xplained: fix typo.

Signed-off-by: Gaël PORTAY <gael.portay@gmail.com>
Config: new kernel sub-menu for both linux and android setup

Merge both linux and android setup menu in a common menu.

Signed-off-by: Gaël PORTAY <gael.portay@gmail.com>
Config: kernel: move device-tree support to a dedicated sub-menu

Signed-off-by: Gaël PORTAY <gael.portay@gmail.com>
Config: kernel: new option to overwrite the command-line

Allow user to override or not the kernel command-line.

Signed-off-by: Gaël PORTAY <gael.portay@gmail.com>
Config: kernel: new option to append arguments to command-line

Allow user to append any arguments to existing command-line from image
ATAGS or device-tree.

Signed-off-by: Gaël PORTAY <gael.portay@gmail.com>
drivers: support for UBI in nandflash.

This is a basic implementation of UBI.
 * there is not check for CRC header yet,
 * there is not support for fastmpap yest.

Those features will come up soon. Currently, this is an experimental
version and the code must remain light to feet into the SRAM.

The UBI support let you boot a kernel image or a bootloader and make their
upgrade safer using spare volumes. Is spreads as well the wear on
almost all NAND flash memory.

Signed-off-by: Gaël PORTAY <gael.portay@gmail.com>
drivers: ubi: enable CRC support.

Signed-off-by: Gaël PORTAY <gael.portay@gmail.com>