trivial: fix typo milisecond/millisecond for documentation and source comments.

Signed-off-by: Martin Olsson <martin@minimum.se>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

drivers/scsi/dpt/osd_util.h

@@ -342,7 +342,7 @@ uLONG osdGetThreadID(void);
 /* wakes up the specifed thread */
 void osdWakeThread(uLONG);
 
-/* osd sleep for x miliseconds */
+/* osd sleep for x milliseconds */
 void osdSleep(uLONG);
 
 #define DPT_THREAD_PRIORITY_LOWEST 0x00