sf: new driver for Winbond W25X16/32/64 devices

Signed-off-by: Jason McMullan <jason.mcmullan@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c
index 25346a4..612f819 100644
--- a/drivers/mtd/spi/spi_flash.c
+++ b/drivers/mtd/spi/spi_flash.c
@@ -140,6 +140,11 @@
 		flash = spi_flash_probe_macronix(spi, idcode);
 		break;
 #endif
+#ifdef CONFIG_SPI_FLASH_WINBOND
+	case 0xef:
+		flash = spi_flash_probe_winbond(spi, idcode);
+		break;
+#endif
 #ifdef CONFIG_SPI_FLASH_STMICRO
 	case 0x20:
 		flash = spi_flash_probe_stmicro(spi, idcode);