Restore the conversion to an all-UBI NAND layout and use of fitblk on
SPI-NAND connected via the mt65xx SPI controller.
Apply the same also for SPI-NAND connected via the SNFI controller, and
use fitblk also for boot from SPI-NOR, eMMC and SD.
Fixes: f9206d1111 ("kernel/mediatek: 6.12: replace downstream files by patches")
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
e46eeb89d7