sf: spansion: Add support for S25FL512S_64K

Add support for Spansion S25FL512S_64K SPI flash.

Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
diff --git a/drivers/mtd/spi/spansion.c b/drivers/mtd/spi/spansion.c
index dad4fbb..3ec2151 100644
--- a/drivers/mtd/spi/spansion.c
+++ b/drivers/mtd/spi/spansion.c
@@ -110,6 +110,13 @@
 		.nr_sectors = 512,
 		.name = "S25FL256S_64K",
 	},
+	{
+		.idcode1 = 0x0220,
+		.idcode2 = 0x4d01,
+		.pages_per_sector = 256,
+		.nr_sectors = 1024,
+		.name = "S25FL512S_64K",
+	},
 };
 
 struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode)