sf: winbond: Add support for W25Q128FW

Add support for Winbond W25Q128FW SPI flash.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
diff --git a/drivers/mtd/spi/winbond.c b/drivers/mtd/spi/winbond.c
index 3c0ca88..e07480b 100644
--- a/drivers/mtd/spi/winbond.c
+++ b/drivers/mtd/spi/winbond.c
@@ -97,6 +97,11 @@
 		.nr_blocks		= 128,
 		.name			= "W25Q64DW",
 	},
+	{
+		.id			= 0x6018,
+		.nr_blocks		= 256,
+		.name			= "W25Q128FW",
+	},
 };
 
 struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode)