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/drivers/video/gbefb.c b/drivers/video/gbefb.c
index 1a83709..492e6e6 100644
--- a/drivers/video/gbefb.c
+++ b/drivers/video/gbefb.c
@@ -701,7 +701,7 @@
 	   blocks of 512x128, 256x128 or 128x128 pixels, respectively for 8bit,
 	   16bit and 32 bit modes (64 kB). They cover the screen with partial
 	   tiles on the right and/or bottom of the screen if needed.
-	   For exemple in 640x480 8 bit mode the mapping is:
+	   For example in 640x480 8 bit mode the mapping is:
 
 	   <-------- 640 ----->
 	   <---- 512 ----><128|384 offscreen>