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mtd: spi-nor: winbond: Fix locking support for w25q256jw

The Winbond w25q256jw device:
- Supports lock/unlock via SR.
- Has Top/Bottom (TB) protect bit.
- Uses Status Register bit 6 as the Top/Bottom (TB) protect bit.
- Supports four Block Protect (BP) bits.

Update the flash parameters by enabling SPI_NOR_HAS_LOCK, SPI_NOR_HAS_TB,
SPI_NOR_TB_SR_BIT6 and SPI_NOR_4BIT_BP. 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) 760e8c38 a0f64241

+1
+1
drivers/mtd/spi-nor/winbond.c
··· 274 274 .id = SNOR_ID(0xef, 0x60, 0x19), 275 275 .name = "w25q256jw", 276 276 .size = SZ_32M, 277 + .flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB | SPI_NOR_TB_SR_BIT6 | SPI_NOR_4BIT_BP, 277 278 .no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ, 278 279 }, { 279 280 .id = SNOR_ID(0xef, 0x60, 0x20),