dm: usb: sandbox: Enable USB

Enable USB emulation and associated features so that USB can be used in
sandbox.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Marek Vasut <marex@denx.de>

configs/sandbox_defconfig

@@ -12,3 +12,7 @@ CONFIG_CMD_CROS_EC=y
 CONFIG_PCI=y
 CONFIG_DM_PCI=y
 CONFIG_PCI_SANDBOX=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_USB_EMUL=y
+CONFIG_USB_STORAGE=y

include/configs/sandbox.h

@@ -60,6 +60,7 @@
 #define CONFIG_CMD_GPT
 #define CONFIG_PARTITION_UUIDS
 #define CONFIG_EFI_PARTITION
+#define CONFIG_DOS_PARTITION
 
 /*
  * Size of malloc() pool, before and after relocation
@@ -199,5 +200,6 @@
 #define CONFIG_TPM_TIS_SANDBOX
 
 #define CONFIG_CMD_LZMADEC
+#define CONFIG_CMD_USB
 
 #endif