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

All the UniPhier boards have switch to Driver Model.
"select DM" is better than default value in each defconfig.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: NSimon Glass <sjg@chromium.org>

arch/arm/Kconfig

@@ -761,6 +761,9 @@ config ARCH_UNIPHIER
 	select SUPPORT_SPL
 	select SPL
 	select OF_CONTROL
+	select DM
+	select DM_SERIAL
+	select DM_I2C
 
 endchoice
 

configs/ph1_ld4_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_UNIPHIER=y
-CONFIG_DM=y
-CONFIG_DM_SERIAL=y
 CONFIG_SPL_DM=y
-CONFIG_DM_I2C=y
 CONFIG_MACH_PH1_LD4=y
 CONFIG_PFC_MICRO_SUPPORT_CARD=y
 CONFIG_DEFAULT_DEVICE_TREE="uniphier-ph1-ld4-ref"

configs/ph1_pro4_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_UNIPHIER=y
-CONFIG_DM=y
-CONFIG_DM_SERIAL=y
 CONFIG_SPL_DM=y
-CONFIG_DM_I2C=y
 CONFIG_MACH_PH1_PRO4=y
 CONFIG_PFC_MICRO_SUPPORT_CARD=y
 CONFIG_DEFAULT_DEVICE_TREE="uniphier-ph1-pro4-ref"

configs/ph1_sld8_defconfig

 CONFIG_ARM=y
 CONFIG_ARCH_UNIPHIER=y
-CONFIG_DM=y
-CONFIG_DM_SERIAL=y
 CONFIG_SPL_DM=y
-CONFIG_DM_I2C=y
 CONFIG_MACH_PH1_SLD8=y
 CONFIG_PFC_MICRO_SUPPORT_CARD=y
 CONFIG_DEFAULT_DEVICE_TREE="uniphier-ph1-sld8-ref"