ARM: Simplify SMP/SCU/TWD dependencies

All platforms which currently support SMP also support the ARM SCU
and ARM TWD blocks, so it's pointless to make these config symbols
conditional on the platform symbols which SMP is already conditional
on.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/Kconfig

@@ -1167,13 +1167,13 @@ source "kernel/time/Kconfig"
 
 config SMP
 	bool "Symmetric Multi-Processing (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && (REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP ||\
-		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
-		 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
+	depends on EXPERIMENTAL
 	depends on GENERIC_CLOCKEVENTS
+	depends on REALVIEW_EB_ARM11MP || REALVIEW_EB_A9MP || \
+		 MACH_REALVIEW_PB11MP || MACH_REALVIEW_PBX || ARCH_OMAP4 ||\
+		 ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4
 	select USE_GENERIC_SMP_HELPERS
-	select HAVE_ARM_SCU if ARCH_REALVIEW || ARCH_OMAP4 || ARCH_S5PV310 ||\
-		 ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4
+	select HAVE_ARM_SCU
 	help
 	  This enables support for systems with more than one CPU. If you have
 	  a system with only one CPU, like most personal computers, say N. If
@@ -1241,12 +1241,9 @@ config HOTPLUG_CPU
 
 config LOCAL_TIMERS
 	bool "Use local timer interrupts"
-	depends on SMP && (REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || \
-		REALVIEW_EB_A9MP || MACH_REALVIEW_PBX || ARCH_OMAP4 || \
-		ARCH_S5PV310 || ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS_CA9X4)
+	depends on SMP
 	default y
-	select HAVE_ARM_TWD if ARCH_REALVIEW || ARCH_OMAP4 || ARCH_S5PV310 || \
-		ARCH_TEGRA || ARCH_U8500 || ARCH_VEXPRESS
+	select HAVE_ARM_TWD
 	help
 	  Enable support for local timers on SMP platforms, rather then the
 	  legacy IPI broadcast method.  Local timers allows the system