Fix trivial typos in Kconfig* files

Fix several typos in help text in Kconfig* files.

Signed-off-by: David Sterba <dave@jikos.cz>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/arch/m68knommu/Kconfig.debug b/arch/m68knommu/Kconfig.debug
index 763c9aa..9ff47bd 100644
--- a/arch/m68knommu/Kconfig.debug
+++ b/arch/m68knommu/Kconfig.debug
@@ -5,7 +5,7 @@
 config FULLDEBUG
 	bool "Full Symbolic/Source Debugging support"
 	help
-	  Enable debuging symbols on kernel build.
+	  Enable debugging symbols on kernel build.
 
 config HIGHPROFILE
 	bool "Use fast second timer for profiling"