mtd: spi-nor: support en25s64 device

Add support for EON en25s64 SPI flash.

Signed-off-by: Shengzhou Liu <Shengzhou.Liu@freescale.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 60bf3ca..bdd2937 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -538,6 +538,7 @@
 	{ "en25q64",    INFO(0x1c3017, 0, 64 * 1024,  128, SECT_4K) },
 	{ "en25qh128",  INFO(0x1c7018, 0, 64 * 1024,  256, 0) },
 	{ "en25qh256",  INFO(0x1c7019, 0, 64 * 1024,  512, 0) },
+	{ "en25s64",	INFO(0x1c3817, 0, 64 * 1024,  128, 0) },
 
 	/* ESMT */
 	{ "f25l32pa", INFO(0x8c2016, 0, 64 * 1024, 64, SECT_4K) },