kconfig: Standardize "depends" -> "depends on" in Kconfig files

Standardize the miniscule percentage of occurrences of "depends" in
Kconfig files to "depends on", and update kconfig-language.txt to
reflect that.

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig
index ddbe398..b3c2ce4 100644
--- a/arch/powerpc/platforms/embedded6xx/Kconfig
+++ b/arch/powerpc/platforms/embedded6xx/Kconfig
@@ -35,7 +35,7 @@
 	  Select HDPU if configuring a Sky Computers Compute Blade.
 
 config HDPU_FEATURES
-	depends HDPU
+	depends on HDPU
 	tristate "HDPU-Features"
 	help
 	  Select to enable HDPU enhanced features.