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>

drivers/mtd/tests/mtd_speedtest.c

@@ -351,7 +351,7 @@ static int __init mtd_speedtest_init(void)
 	printk(KERN_INFO "=================================================\n");
 
 	if (dev < 0) {
-		pr_info("Please specify a valid mtd-device via module paramter\n");
+		pr_info("Please specify a valid mtd-device via module parameter\n");
 		pr_crit("CAREFUL: This test wipes all data on the specified MTD device!\n");
 		return -EINVAL;
 	}