drivers/spi/winbond.c: Add W25Q64JV signature

I am using a pair of Winbond W25Q64JVSSIM SPI flash chips for
coreboot development. While working on Asus P8x7x Series
autonomous soft strap update support, aka CB:85413 and CB:87334,
I found that without its signature (mfgr 0xef, dev 0x7017) added,
rdev_writeat() would fail to get anything into the flash chip
even though it reports success. Its other parameters are copied
from W25Q64_V as the two are almost the same.

Change-Id: I4af6268a2a1bde4d2ff9c76879c3bc59b91a916d
Signed-off-by: Keith Hui <buurin@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/87363
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Matt DeVillier <matt.devillier@gmail.com>

src/drivers/spi/winbond.c

@@ -157,6 +157,15 @@ static const struct spi_flash_part_id flash_table[] = {
 		.protection_granularity_shift	= 17,
 		.bp_bits			= 3,
 	},
+	{
+		/* W25Q64JV */
+		.id[0]				= 0x7017,
+		.nr_sectors_shift		= 11,
+		.fast_read_dual_output_support	= 1,
+		.fast_read_dual_io_support	= 1,
+		.protection_granularity_shift	= 17,
+		.bp_bits			= 3,
+	},
 	{
 		/* W25Q64JW */
 		.id[0]				= 0x8017,