Migrate the BR/OR settings to Kconfig. These must be known at compile
time, so cannot be configured via DT.
Configuration of this crucial variable should still be somewhat
comfortable. Hence, make its fields configurable in Kconfig, and
assemble the final value from these.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
NAND flavors, like serial and parallel, have a lot in common and would
benefit to share code. Let's move raw (parallel) NAND specific code in a
raw/ subdirectory, to ease the addition of a core file in nand/ and the
introduction of a spi/ subdirectory specific to SPI NANDs.
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
