ARM: S5P: Make the common S5P PM code conditionally compile

Pave the way for adding PM support on S5P64X0, which is more similar
to the S3C64XX series than the S5P series. Hence, the common pm code
(containing dummy functions) should not be used for S5P64X0.
Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

arch/arm/mach-exynos4/Kconfig

@@ -12,11 +12,13 @@ if ARCH_EXYNOS4
 config CPU_EXYNOS4210
 	bool
 	select SAMSUNG_DMADEV
+	select S5P_PM if PM
 	help
 	  Enable EXYNOS4210 CPU support
 
 config SOC_EXYNOS4212
 	bool
+	select S5P_PM if PM
 	help
 	  Enable EXYNOS4212 SoC support
 

arch/arm/mach-s5pv210/Kconfig

@@ -14,6 +14,7 @@ config CPU_S5PV210
 	select SAMSUNG_DMADEV
 	select S5P_EXT_INT
 	select S5P_HRT
+	select S5P_PM if PM
 	help
 	  Enable S5PV210 CPU support
 

arch/arm/plat-s5p/Kconfig

@@ -40,6 +40,12 @@ config S5P_HRT
 	help
 	  Use the High Resolution timer support
 
+config S5P_PM
+	bool
+	help
+	  Common code for power management support on S5P and newer SoCs
+	  Note: Do not select this for S5P6440 and S5P6450.
+
 comment "System MMU"
 
 config S5P_SYSTEM_MMU

arch/arm/plat-s5p/Makefile

@@ -20,8 +20,7 @@ obj-y				+= irq.o
 obj-$(CONFIG_S5P_EXT_INT)	+= irq-eint.o
 obj-$(CONFIG_S5P_GPIO_INT)	+= irq-gpioint.o
 obj-$(CONFIG_S5P_SYSTEM_MMU)	+= sysmmu.o
-obj-$(CONFIG_PM)		+= pm.o
-obj-$(CONFIG_PM)		+= irq-pm.o
+obj-$(CONFIG_S5P_PM)		+= pm.o irq-pm.o
 obj-$(CONFIG_S5P_HRT) 		+= s5p-time.o
 
 # devices