ARM: tegra: Compile sleep-tegra20/30.S unconditionally

The sleep-tegra*.S provides functionality required for suspend/resume
and CPU hotplugging. The new unified CPUIDLE driver will support multiple
hardware generations starting from Terga20 and ending with Tegra124, the
driver will utilize functions that are provided by the assembly and thus
it is cleaner to compile that code without any build-dependencies in order
to avoid churning with #ifdef's.

Acked-by: Peter De Schrijver <[e-mail]>
Tested-by: Peter Geis <[e-mail]>
Tested-by: Jasper Korten <[e-mail]>
Tested-by: David Heidelberg <[e-mail]>
Tested-by: Nicolas Chauvet <[e-mail]>
Signed-off-by: Dmitry Osipenko <[e-mail]>
Signed-off-by: Thierry Reding <[e-mail]>

arch/arm/mach-tegra/Makefile

···
 obj-y					+= reset-handler.o
 obj-y					+= sleep.o
 obj-y					+= tegra.o
+obj-y					+= sleep-tegra20.o
+obj-y					+= sleep-tegra30.o
 obj-$(CONFIG_CPU_IDLE)			+= cpuidle.o
-obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= sleep-tegra20.o
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= pm-tegra20.o
 ifeq ($(CONFIG_CPU_IDLE),y)
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= cpuidle-tegra20.o
 endif
-obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= sleep-tegra30.o
 obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= pm-tegra30.o
 ifeq ($(CONFIG_CPU_IDLE),y)
 obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= cpuidle-tegra30.o
···
 obj-$(CONFIG_SMP)			+= platsmp.o
 obj-$(CONFIG_HOTPLUG_CPU)               += hotplug.o
 
-obj-$(CONFIG_ARCH_TEGRA_114_SOC)	+= sleep-tegra30.o
 obj-$(CONFIG_ARCH_TEGRA_114_SOC)	+= pm-tegra30.o
 ifeq ($(CONFIG_CPU_IDLE),y)
 obj-$(CONFIG_ARCH_TEGRA_114_SOC)	+= cpuidle-tegra114.o
 endif
-obj-$(CONFIG_ARCH_TEGRA_124_SOC)	+= sleep-tegra30.o
 obj-$(CONFIG_ARCH_TEGRA_124_SOC)	+= pm-tegra30.o
 ifeq ($(CONFIG_CPU_IDLE),y)
 obj-$(CONFIG_ARCH_TEGRA_124_SOC)	+= cpuidle-tegra114.o

arch/arm/mach-tegra/sleep.h

···
 int tegra_sleep_cpu_finish(unsigned long);
 void tegra_disable_clean_inv_dcache(u32 flag);
 
-#ifdef CONFIG_HOTPLUG_CPU
 void tegra20_hotplug_shutdown(void);
 void tegra30_hotplug_shutdown(void);
-#endif
 
 void tegra20_cpu_shutdown(int cpu);
 int tegra20_cpu_is_resettable_soon(void);