Pumpkin: enable USB in configuration file

Signed-off-by: Fabien Parent <fparent@baylibre.com>
diff --git a/configs/pumpkin_defconfig b/configs/pumpkin_defconfig
index d4ab919..09cc7ea 100644
--- a/configs/pumpkin_defconfig
+++ b/configs/pumpkin_defconfig
@@ -46,6 +46,11 @@
 CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
 # CONFIG_NET is not set
 CONFIG_CLK=y
+CONFIG_USB_FUNCTION_FASTBOOT=y
+CONFIG_FASTBOOT_BUF_ADDR=0x4d000000
+CONFIG_FASTBOOT_BUF_SIZE=0x700000
+CONFIG_FASTBOOT_FLASH=y
+CONFIG_FASTBOOT_FLASH_MMC_DEV=0
 CONFIG_DM_GPIO=y
 # CONFIG_INPUT is not set
 CONFIG_DM_MMC=y
@@ -60,6 +65,14 @@
 CONFIG_DEBUG_UART_MTK=y
 CONFIG_DEBUG_UART_ANNOUNCE=y
 CONFIG_MTK_SERIAL=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_USB_MUSB_GADGET=y
+CONFIG_USB_MUSB_MTK=y
+CONFIG_USB_MUSB_PIO_ONLY=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_VENDOR_NUM=0x0e8d
+CONFIG_USB_GADGET_PRODUCT_NUM=0x201c
 CONFIG_WDT=y
 CONFIG_WDT_MTK=y
 # CONFIG_EFI_LOADER is not set