arm: mvebu: db-88f6820-gp: Add USB/EHCI support

This patch enabled the USB/EHCI support for the Marvell
DB-88F6820-GP eval board.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Luka Perkov <luka.perkov@sartura.hr>

include/configs/db-88f6820-gp.h

@@ -41,6 +41,7 @@
 #define CONFIG_CMD_SPI
 #define CONFIG_CMD_TFTPPUT
 #define CONFIG_CMD_TIME
+#define CONFIG_CMD_USB
 
 /* I2C */
 #define CONFIG_SYS_I2C
@@ -82,6 +83,12 @@
 /* Additional FS support/configuration */
 #define CONFIG_SUPPORT_VFAT
 
+/* USB/EHCI configuration */
+#define CONFIG_USB_EHCI
+#define CONFIG_USB_STORAGE
+#define CONFIG_USB_EHCI_MARVELL
+#define CONFIG_EHCI_IS_TDI
+
 /* Environment in SPI NOR flash */
 #define CONFIG_ENV_IS_IN_SPI_FLASH
 #define CONFIG_ENV_OFFSET		(1 << 20) /* 1MiB in */