ARM: tegra: enable DFU too

Enable DFU protocol support (via the "dfu" command) on Tegra boards where
USB device/gadget mode is enabled.

Note that for DFU to operate correctly on Tegra, we still need some DFU
fixes/enhancements that are going through the DFU -> USB trees. However,
the code builds just fine without those changes, and applying this patch
now will allow both sets of patches to meet in the main U-Boot tree much
more quickly.

In order to run test/dfu/dfu_gadget_test.sh, you would need to add the
following to the board configuration:

CONFIG_EXT4_WRITE
CONFIG_CMD_EXT4_WRITE

However, I haven't enabled those here, since I believe the main use-case
for DFU on Tegra is raw flash writing, rather than filesystem access, so
we don't need the additional code-size hit. However, I could be persuaded
otherwise! We should probably add a separate test script for raw flash
access.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/include/configs/tegra-common-usb-gadget.h b/include/configs/tegra-common-usb-gadget.h
new file mode 100644
index 0000000..287460c
--- /dev/null
+++ b/include/configs/tegra-common-usb-gadget.h
@@ -0,0 +1,37 @@
+/*
+ * (C) Copyright 2014
+ * NVIDIA Corporation <www.nvidia.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0
+ */
+
+#ifndef _TEGRA_COMMON_USB_GADGET_H_
+#define _TEGRA_COMMON_USB_GADGET_H_
+
+#ifndef CONFIG_SPL_BUILD
+/* USB gadget mode support*/
+#define CONFIG_USB_GADGET
+#define CONFIG_USB_GADGET_VBUS_DRAW    2
+#define CONFIG_CI_UDC
+#define CONFIG_CI_UDC_HAS_HOSTPC
+#define CONFIG_USB_GADGET_DUALSPEED
+#define CONFIG_G_DNL_VENDOR_NUM 0x0955
+#define CONFIG_G_DNL_PRODUCT_NUM 0x701A
+#define CONFIG_G_DNL_MANUFACTURER "NVIDIA"
+#define CONFIG_USBDOWNLOAD_GADGET
+/* USB mass storage protocol */
+#define CONFIG_USB_GADGET_MASS_STORAGE
+#define CONFIG_CMD_USB_MASS_STORAGE
+/* DFU protocol */
+#define CONFIG_DFU_FUNCTION
+#define CONFIG_SYS_DFU_DATA_BUF_SIZE (1 * 1024 * 1024)
+#define CONFIG_CMD_DFU
+#ifdef CONFIG_MMC
+#define CONFIG_DFU_MMC
+#endif
+#ifdef CONFIG_SPI_FLASH
+#define CONFIG_DFU_SF
+#endif
+#endif
+
+#endif /* _TEGRA_COMMON_USB_GADGET_H_ */