The device type was left uninitialized which caused later tests
against DEV_TYPE_UNKNOWN to fail. In the result, "usb part" would
attempt to print information about non-existent devices like this:
	=> usb part
	print_part of 0
	Partition Map for USB device 0  --   Partition Type: DOS
	Partition     Start Sector     Num Sectors     Type
	    1                    0         
2031616      f8
	print_part of 1
	## Unknown partition table
	print_part of 2
	## Unknown partition table
	print_part of 3
	## Unknown partition table
	print_part of 4
	## Unknown partition table
	=>
By initializing the type as DEV_TYPE_UNKNOWN we avoid all the
"Unknown partition table" messages.
[Note: the "print_part of ?" messages is left over debug code that
will be removed in another patch.]
Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Remy Bohmer <linux@bohmer.net>
 
        for (i = 0; i < USB_MAX_STOR_DEV; i++) {
                memset(&usb_dev_desc[i], 0, sizeof(block_dev_desc_t));
-               usb_dev_desc[i].target = 0xff;
                usb_dev_desc[i].if_type = IF_TYPE_USB;
                usb_dev_desc[i].dev = i;
                usb_dev_desc[i].part_type = PART_TYPE_UNKNOWN;
+               usb_dev_desc[i].target = 0xff;
+               usb_dev_desc[i].type = DEV_TYPE_UNKNOWN;
                usb_dev_desc[i].block_read = usb_stor_read;
                usb_dev_desc[i].block_write = usb_stor_write;
        }