Merge tag 'spi-nor/for-6.17' into mtd/next

SPI NOR changes for 6.17

Notable changes:

- Fix exiting 4-byte addressing on Infineon SEMPER flashes. These
  flashes do not support the standard EX4B opcode (E9h), and use a
  vendor-specific opcode (B8h) instead.

- Fix unlocking of flashes that are write-protected at power-on. This
  was caused by using an uninitialized mtd_info in
  spi_nor_try_unlock_all().

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>