ppc/85xx: Enable usb ehci support for p2020ds board

Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

include/configs/P2020DS.h

@@ -618,6 +618,15 @@ extern unsigned long calculate_board_ddr_clk(unsigned long dummy);
 #define CONFIG_CMD_EXT2
 #endif
 
+/*
+ * USB
+ */
+#define CONFIG_CMD_USB
+#define CONFIG_USB_STORAGE
+#define CONFIG_USB_EHCI
+#define CONFIG_USB_EHCI_FSL
+#define CONFIG_EHCI_HCD_INIT_AFTER_RESET
+
 #undef CONFIG_WATCHDOG			/* watchdog disabled */
 
 /*