powerpc/mpc8536ds: Add USB support for MPC8536DS

Add EHCI controller and USB command definition.

Signed-off-by: Xie Xiaobo <r63061@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

include/configs/MPC8536DS.h

@@ -694,6 +694,21 @@
 #define CONFIG_SYS_FSL_ESDHC_ADDR	CONFIG_SYS_MPC85xx_ESDHC_ADDR
 #define CONFIG_CMD_MMC
 #define CONFIG_GENERIC_MMC
+#endif
+
+/*
+ * USB
+ */
+#define CONFIG_USB_EHCI
+
+#ifdef CONFIG_USB_EHCI
+#define CONFIG_CMD_USB
+#define CONFIG_EHCI_HCD_INIT_AFTER_RESET
+#define CONFIG_USB_EHCI_FSL
+#define CONFIG_USB_STORAGE
+#endif
+
+#if defined(CONFIG_MMC) || defined(CONFIG_USB_EHCI)
 #define CONFIG_CMD_EXT2
 #define CONFIG_CMD_FAT
 #define CONFIG_DOS_PARTITION