wusb: add the Wireless USB core (build-system)

Add the WUSB build system (Kconfig and Kbuild) files.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: David Vrabel <david.vrabel@csr.com>
diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index a419c42..19ede32 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -19,6 +19,8 @@
 
 obj-$(CONFIG_USB_C67X00_HCD)	+= c67x00/
 
+obj-$(CONFIG_USB_WUSB)		+= wusbcore/
+
 obj-$(CONFIG_USB_ACM)		+= class/
 obj-$(CONFIG_USB_PRINTER)	+= class/