mtd: Fix typo mtd/tests

Correct spelling typo in printk within drivers/mtd/tests.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 95d56ed..6eef7fb 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -160,7 +160,7 @@
 }
 
 /**
- * nand_read_byte16 - [DEFAULT] read one byte endianess aware from the chip
+ * nand_read_byte16 - [DEFAULT] read one byte endianness aware from the chip
  * nand_read_byte16 - [DEFAULT] read one byte endianness aware from the chip
  * @mtd: MTD device structure
  *