kbuild: Replace remaining "depends" with "depends on"

Replace the very few remaining "depends" Kconfig directives with
"depends on".

Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 5c79519..77d062e 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -405,7 +405,7 @@
 
 config IWMMXT
 	bool "Enable iWMMXt support"
-	depends CPU_XSCALE || CPU_XSC3
+	depends on CPU_XSCALE || CPU_XSC3
 	default y if PXA27x
 	help
 	  Enable support for iWMMXt context switching at run time if