ARM: S5PV310: Place the common SPARSEMEM at ARCH_S5PV310

In case of S5PV310/S5PC210, it uses the SPARSEMEM as default memory
configuration. So moved to ARCH_S5PV310 config.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: edited title]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 7f2fed1..80203dc 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -731,6 +731,7 @@
 config ARCH_S5PV310
 	bool "Samsung S5PV310/S5PC210"
 	select CPU_V7
+	select ARCH_SPARSEMEM_ENABLE
 	select GENERIC_GPIO
 	select HAVE_CLK
 	select GENERIC_CLOCKEVENTS