mtd: spi-nor: spansion: Add support for S28HS256T

mtd: spi-nor: spansion: Add support for S28HS256T

Infineon S28HS256T is 256Mb Octal SPI device which has same
functionalities with 512Mb and 1Gb parts.

Link: https://www.infineon.com/dgdl/Infineon-S28HS256T_S28HL256T_256Mb_SEMPER_Flash_Octal_interface_1_8V_3-DataSheet-v02_00-EN.pdf?fileId=8ac78c8c8fc2dd9c018fc66787aa0657
Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@infineon.com>
Reviewed-by: Michael Walle <mwalle@kernel.org>
Signed-off-by: Pratyush Yadav <pratyush@kernel.org>
Link: https://lore.kernel.org/r/20240830080428.6994-1-Takahiro.Kuwano@infineon.com