drivers/spi/winbond.c: Add W25Q256JW_DTR part

BUG=b:285110121
TEST=boot Myst and verify the flash is recognized

Change-Id: I30aed5299f87f7cf02fe9a5569edd2b8dcf7b452
Signed-off-by: Fred Reitberger <reitbergerfred@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75587
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jon Murphy <jpmurphy@google.com>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>

src/drivers/spi/winbond.c

@@ -238,6 +238,15 @@ static const struct spi_flash_part_id flash_table[] = {
 		.protection_granularity_shift	= 16,
 		.bp_bits			= 4,
 	},
+	{
+		/* W25Q256JW_DTR */
+		.id[0]				= 0x8019,
+		.nr_sectors_shift		= 13,
+		.fast_read_dual_output_support	= 1,
+		.fast_read_dual_io_support	= 1,
+		.protection_granularity_shift	= 16,
+		.bp_bits			= 4,
+	},
 };
 
 /*