dm: exynos: Move driver model CONFIGs to Kconfig

Remove driver model CONFIGs from the board config headers and use Kconfig
instead.

Signed-off-by: Simon Glass <sjg@chromium.org>

board/samsung/goni/Kconfig

@@ -12,4 +12,13 @@ config SYS_SOC
 config SYS_CONFIG_NAME
 	default "s5p_goni"
 
+config DM
+	default y if !SPL_BUILD
+
+config DM_GPIO
+	default y if !SPL_BUILD
+
+config DM_SERIAL
+	default y if !SPL_BUILD
+
 endif

board/samsung/smdk5420/Kconfig

@@ -22,6 +22,9 @@ config SYS_VENDOR
 config SYS_CONFIG_NAME
 	default "peach-pi"
 
+config DM_CROS_EC
+	default y
+
 endif
 
 if TARGET_PEACH_PIT
@@ -35,6 +38,9 @@ config SYS_VENDOR
 config SYS_CONFIG_NAME
 	default "peach-pit"
 
+config DM_CROS_EC
+	default y
+
 endif
 
 if TARGET_SMDK5420

board/samsung/smdkc100/Kconfig

@@ -12,4 +12,13 @@ config SYS_SOC
 config SYS_CONFIG_NAME
 	default "smdkc100"
 
+config DM
+	default y if !SPL_BUILD
+
+config DM_GPIO
+	default y if !SPL_BUILD
+
+config DM_SERIAL
+	default y if !SPL_BUILD
+
 endif