USB: Correct Makefile to make isp1760 buildable

Signed-off-by: Ivan Kuten <ivan.kuten@promwad.com>
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile
index 8bcde8c..b2ceb4a 100644
--- a/drivers/usb/Makefile
+++ b/drivers/usb/Makefile
@@ -11,6 +11,7 @@
 obj-$(CONFIG_PCI)		+= host/
 obj-$(CONFIG_USB_EHCI_HCD)	+= host/
 obj-$(CONFIG_USB_ISP116X_HCD)	+= host/
+obj-$(CONFIG_USB_ISP1760_HCD)	+= host/
 obj-$(CONFIG_USB_OHCI_HCD)	+= host/
 obj-$(CONFIG_USB_UHCI_HCD)	+= host/
 obj-$(CONFIG_USB_FHCI_HCD)	+= host/