kernel: 5.10: add patches to fix macronix flash

kernel: 5.10: add patches to fix macronix flash

mtd: spi-nor: locking support for MX25L6405D

Macronix MX25L6405D supports locking with four block-protection bits.
Currently, the driver only sets three bits.  If the bootloader does not
sustain the flash chip in an unlocked state, the flash might be
non-writeable. Add the corresponding flag to enable locking support with
four bits in the status register.

mtd: spi-nor: disable 16-bit-sr for macronix

Macronix flash chips seem to consist of only one status register.
These chips will not work with the "16-bit Write Status (01h) Command".
Disable SNOR_F_HAS_16BIT_SR for all Macronix chips.

Refreshed:
- 0052-mtd-spi-nor-use-4-bit-locking-for-MX25L12805D.patch

Fixes: 15aa53d7ee65 ("ath79: switch to Kernel 5.10")
Signed-off-by: Nick Hainke <vincent@systemli.org>