ARM: EXYNOS: To use common config for EXYNOS4 and EXYNOS5 SPI

The naming EXYNOS4 is changed to EXYNOS for using shared SPI
config of EXYNOS4 and EXYNOS5. And S3C64XX_DEV_SPIn configs
are added to MACH_SMDK5250 config to use SPI on the EYXNOS5250.

Signed-off-by: Kyoungil Kim <ki0351.kim@samsung.com>
[kgene.kim@samsung.com: updated because of non-existing config]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index 4bb2f94..ff3e47d 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -167,7 +167,7 @@
 	help
 	  Common setup code for USB PHY controller
 
-config EXYNOS4_SETUP_SPI
+config EXYNOS_SETUP_SPI
 	bool
 	help
 	  Common setup code for SPI GPIO configurations.