nuttx: add support for NAND flash

This cherry-picks upstream commits adding NAND flash support for the
Winbond W25N specifically W25N01GV chip.

NAND flash is used together with littlefs, hence I updated that to 2.5.1
to match upstream NuttX.
This commit is contained in:
Julian Oes
2026-01-08 16:47:23 +13:00
parent 1b7e12cf90
commit 833e4536b7