[ARM] Remove useless 'default n' from Kconfig files

The default is already 'n' so there's no need to explicitly state it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-realview/Kconfig b/arch/arm/mach-realview/Kconfig
index 1299768..17f5f44 100644
--- a/arch/arm/mach-realview/Kconfig
+++ b/arch/arm/mach-realview/Kconfig
@@ -3,7 +3,6 @@
 
 config MACH_REALVIEW_EB
 	bool "Support RealView/EB platform"
-	default n
 	select ARM_GIC
 	help
 	  Include support for the ARM(R) RealView Emulation Baseboard platform.
diff --git a/arch/arm/mach-versatile/Kconfig b/arch/arm/mach-versatile/Kconfig
index 8d787f4..95096af 100644
--- a/arch/arm/mach-versatile/Kconfig
+++ b/arch/arm/mach-versatile/Kconfig
@@ -9,7 +9,6 @@
 
 config MACH_VERSATILE_AB
 	bool "Support Versatile/AB platform"
-	default n
 	help
 	  Include support for the ARM(R) Versatile/AP platform.
 
diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index 9693e9b..0887bb2 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -22,7 +22,6 @@
 config OMAP_RESET_CLOCKS
 	bool "Reset unused clocks during boot"
 	depends on ARCH_OMAP
-	default n
 	help
 	  Say Y if you want to reset unused clocks during boot.
 	  This option saves power, but assumes all drivers are
@@ -44,7 +43,6 @@
 config OMAP_MUX_DEBUG
 	bool "Multiplexing debug output"
         depends on OMAP_MUX
-        default n
         help
           Makes the multiplexing functions print out a lot of debug info.
           This is useful if you want to find out the correct values of the
@@ -93,7 +91,6 @@
 
 config OMAP_DM_TIMER
 	bool "Use dual-mode timer"
-	default n
 	depends on ARCH_OMAP16XX
 	help
 	 Select this option if you want to use OMAP Dual-Mode timers.