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mtd: spi-nor: winbond: Fix locking support for w25q256jwm

The Winbond w25q256jwm device supports four Block Protect (BP) bits and
uses Status Register bit 6 as the Top/Bottom (TB) protect bit.

Update the flash parameters by enabling SPI_NOR_4BIT_BP and
SPI_NOR_TB_SR_BIT6. Without these flags, the locking configuration is
incorrect.

Reference:
https://www.winbond.com/hq/support/documentation/levelOne.jsp?__locale=en&DocNo=DA00-W25Q256JW.1

Signed-off-by: Eliav Farber <farbere@amazon.com>
Reviewed-by: Michael Walle <mwalle@kernel.org>
Signed-off-by: Pratyush Yadav (Google) <pratyush@kernel.org>

authored by

Eliav Farber and committed by
Pratyush Yadav (Google) 0f0b444b 94645aa4

+1 -1
+1 -1
drivers/mtd/spi-nor/winbond.c
··· 337 337 .id = SNOR_ID(0xef, 0x80, 0x19), 338 338 .name = "w25q256jwm", 339 339 .size = SZ_32M, 340 - .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB, 340 + .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 | SPI_NOR_4BIT_BP, 341 341 .no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ, 342 342 }, { 343 343 .id = SNOR_ID(0xef, 0x80, 0x20),