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/include/asm-generic/unistd.h b/include/asm-generic/unistd.h
index d76b66a..7c38c14 100644
--- a/include/asm-generic/unistd.h
+++ b/include/asm-generic/unistd.h
@@ -631,7 +631,7 @@
  * these are provided for both review and as a porting
  * help for the C library version.
 *
- * Last chance: are any of these important enought to
+ * Last chance: are any of these important enough to
  * enable by default?
  */
 #ifdef __ARCH_WANT_SYSCALL_NO_AT