ARM: SAMSUNG: Add keypad device support

This patch adds Samsung keypad device definition for Samsung SoCs.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig
index 15ef1e4..4529dd6 100644
--- a/arch/arm/plat-samsung/Kconfig
+++ b/arch/arm/plat-samsung/Kconfig
@@ -237,6 +237,11 @@
 	help
 	    Common in platform device definitions for touchscreen device
 
+config SAMSUNG_DEV_KEYPAD
+	bool
+	help
+	  Compile in platform device definitions for keypad
+
 # DMA
 
 config S3C_DMA