dm: sandbox: Enable IDE

Enable building the IDE code for sandbox. This is for build coverage only.
It does not currently work.

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

include/configs/sandbox.h

@@ -192,4 +192,14 @@
 #define CONFIG_CMD_LZMADEC
 #define CONFIG_CMD_DATE
 
+#define CONFIG_CMD_IDE
+#define CONFIG_SYS_IDE_MAXBUS		1
+#define CONFIG_SYS_ATA_IDE0_OFFSET	0
+#define CONFIG_SYS_IDE_MAXDEVICE	2
+#define CONFIG_SYS_ATA_BASE_ADDR	0x100
+#define CONFIG_SYS_ATA_DATA_OFFSET	0
+#define CONFIG_SYS_ATA_REG_OFFSET	1
+#define CONFIG_SYS_ATA_ALT_OFFSET	2
+#define CONFIG_SYS_ATA_STRIDE		4
+
 #endif