typo fixes

Most of these fixes were already submitted for old kernel versions, and were
approved, but for some reason they never made it into the releases.

Because this is a consolidation of a couple old missed patches, it touches both
Kconfigs and documentation texts.

Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index a20a51e..2571619 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -10,8 +10,8 @@
 	 ---help---
 	  This is the core driver for the Silicon Motion SM501 multimedia
 	  companion chip. This device is a multifunction device which may
-	  provide numerous interfaces including USB host controller USB gadget,
-	  Asyncronous Serial ports, Audio functions and a dual display video
+	  provide numerous interfaces including USB host controller, USB gadget,
+	  asynchronous serial ports, audio functions, and a dual display video
 	  interface. The device may be connected by PCI or local bus with
 	  varying functions enabled.