mtd: spi-nor: winbond: add "w/ and w/o SFDP" comment

Commit d35df77 ("mtd: spi-nor: winbond: fix w25q128 regression")
upstream fixed a regression for flavors of 0xef4018 flash that don't
define SFDP tables. Add a comment on the flash definition highlighting
that there are flavors of flashes with and without SFDP support.
It spares developers searching the entire git log for when we'll better
handle these cases.

Acked-by: Pratyush Yadav <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Tudor Ambarus <[email protected]>

Author: ambarus

drivers/mtd/spi-nor/winbond.c

@@ -129,6 +129,7 @@ static const struct flash_info winbond_nor_parts[] = {
 		.no_sfdp_flags = SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ,
 	}, {
 		.id = SNOR_ID(0xef, 0x40, 0x18),
+		/* Flavors w/ and w/o SFDP. */
 		.name = "w25q128",
 		.size = SZ_16M,
 		.flags = SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB,