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/scsi/ips.c b/drivers/scsi/ips.c
index 218f71a..d77891e 100644
--- a/drivers/scsi/ips.c
+++ b/drivers/scsi/ips.c
@@ -4494,7 +4494,7 @@
 /*                                                                          */
 /*   Initialize a CCB to default values                                     */
 /*                                                                          */
-/* ASSUMED to be callled from within a lock                                 */
+/* ASSUMED to be called from within a lock                                 */
 /*                                                                          */
 /****************************************************************************/
 static ips_scb_t *