tree-wide: fix assorted typos all over the place

That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.

Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/Documentation/dvb/README.dvb-usb b/Documentation/dvb/README.dvb-usb
index bf2a9cd..c8238e4 100644
--- a/Documentation/dvb/README.dvb-usb
+++ b/Documentation/dvb/README.dvb-usb
@@ -85,7 +85,7 @@
 	     - moved transfer control (pid filter, fifo control) from usb driver to frontend, it seems
 	       better settled there (added xfer_ops-struct)
 	     - created a common files for frontends (mc/p/mb)
-  2004-09-28 - added support for a new device (Unkown, vendor ID is Hyper-Paltek)
+  2004-09-28 - added support for a new device (Unknown, vendor ID is Hyper-Paltek)
   2004-09-20 - added support for a new device (Compro DVB-U2000), thanks
 	       to Amaury Demol for reporting
 	     - changed usb TS transfer method (several urbs, stopping transfer