ARM: socfpga: use "select" instead of default value in defconfig

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a6d2a41..efd08f2 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -631,11 +631,17 @@
 	bool "Support socfpga_arria5"
 	select CPU_V7
 	select SUPPORT_SPL
+	select DM
+	select DM_SPI_FLASH
+	select DM_SPI
 
 config TARGET_SOCFPGA_CYCLONE5
 	bool "Support socfpga_cyclone5"
 	select CPU_V7
 	select SUPPORT_SPL
+	select DM
+	select DM_SPI_FLASH
+	select DM_SPI
 
 config ARCH_SUNXI
 	bool "Support sunxi (Allwinner) SoCs"