[PATCH] USB Makefile bug fix

fixed problem with UHCI_HCD drivers set to 'y' were not causing the build
to go into the drivers/usb/host directory.

drivers/usb/Makefile

@@ -13,6 +13,8 @@ subdir-$(CONFIG_USB_EHCI_HCD)	+= host
 subdir-$(CONFIG_USB_OHCI_HCD)		+= host
 subdir-$(CONFIG_USB_OHCI)		+= host
 subdir-$(CONFIG_USB_UHCI_ALT)		+= host
+subdir-$(CONFIG_USB_UHCI_HCD_ALT)	+= host
+subdir-$(CONFIG_USB_UHCI_HCD)		+= host
 subdir-$(CONFIG_USB_UHCI)		+= host
 
 subdir-$(CONFIG_USB_ACM)		+= class