dm: sandbox: 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>

arch/sandbox/Kconfig

@@ -10,4 +10,28 @@ config SYS_BOARD
 config SYS_CONFIG_NAME
 	default "sandbox"
 
+config DM
+	default y
+
+config DM_GPIO
+	default y
+
+config DM_SERIAL
+	default y
+
+config DM_CROS_EC
+	default y
+
+config DM_SPI
+	default y
+
+config DM_SPI_FLASH
+	default y
+
+config DM_I2C
+	default y
+
+config DM_TEST
+	default y
+
 endmenu

include/configs/sandbox.h

@@ -23,14 +23,6 @@
 
 #define CONFIG_BOOTSTAGE
 #define CONFIG_BOOTSTAGE_REPORT
-#define CONFIG_CMD_DEMO
-#define CONFIG_DM_DEMO
-#define CONFIG_DM_DEMO_SIMPLE
-#define CONFIG_DM_DEMO_SHAPE
-#define CONFIG_DM_GPIO
-#define CONFIG_DM_TEST
-#define CONFIG_DM_SERIAL
-#define CONFIG_DM_CROS_EC
 
 #define CONFIG_SYS_STDIO_DEREGISTER
 
@@ -95,8 +87,6 @@
 #define CONFIG_CMD_SF_TEST
 #define CONFIG_CMD_SPI
 #define CONFIG_SPI_FLASH
-#define CONFIG_DM_SPI
-#define CONFIG_DM_SPI_FLASH
 #define CONFIG_SPI_FLASH_ATMEL
 #define CONFIG_SPI_FLASH_EON
 #define CONFIG_SPI_FLASH_GIGADEVICE
@@ -107,7 +97,6 @@
 #define CONFIG_SPI_FLASH_STMICRO
 #define CONFIG_SPI_FLASH_WINBOND
 
-#define CONFIG_DM_I2C
 #define CONFIG_CMD_I2C
 #define CONFIG_SYS_I2C_SANDBOX
 #define CONFIG_I2C_EDID