treewide: Fix typos in various parts of the kernel, and fix some comments.

The below patch fixes some typos in various parts of the kernel, as well as fixes some comments.
Please let me know if I missed anything, and I will try to get it changed and resent.

Signed-off-by: Justin P. Mattock <justinmattock@gmail.com>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/usb/otg/fsl_otg.c b/drivers/usb/otg/fsl_otg.c
index 0f420b2..2d9cc44 100644
--- a/drivers/usb/otg/fsl_otg.c
+++ b/drivers/usb/otg/fsl_otg.c
@@ -639,7 +639,7 @@
  * Delayed pin detect interrupt processing.
  *
  * When the Mini-A cable is disconnected from the board,
- * the pin-detect interrupt happens before the disconnnect
+ * the pin-detect interrupt happens before the disconnect
  * interrupts for the connected device(s).  In order to
  * process the disconnect interrupt(s) prior to switching
  * roles, the pin-detect interrupts are delayed, and handled