opt_usb.h changes break the (rump) build on amd64

[Paul Goyette <paul%whooppee.com@localhost>]

Sources updated just a few minutes ago:

#    create  libusb/usbdi.d
CC=/build/netbsd-local/tools/x86_64/amd64/bin/x86_64--netbsd-gcc 
/build/netbsd-local/tools/x86_64/amd64/bin/nbmkdep -f usbdi.d --      
-I/build/netbsd-local/src/sys/rump/dev/lib/libusb/opt 
-I/build/netbsd-local/src/sys/rump/dev/lib/libusb/../../../librump/rumpkern 
-I/build/netbsd-local/src/sys/rump/dev/lib/libusb/../../../librump/rumpdev  
-I/build/netbsd-local/src/sys/rump/dev/lib/libusb/../../../librump/rumpdev/opt 
--sysroot=/build/netbsd-local/dest/amd64 -D_RUMP_NATIVE_ABI -D_KERNEL 
-DMULTIPROCESSOR -D_MODULE -DMODULAR -DMAXUSERS=32 -DDIAGNOSTIC -DCOMPAT_50=1 
-DDEBUGPRINT -I/build/netbsd-local/src/sys/rump/dev/lib/libusb -I. 
-I/build/netbsd-local/src/sys/rump/dev/lib/libusb/../../../../../common/include 
-isystem /build/netbsd-local/src/sys/rump/dev/lib/libusb/../../../../arch 
-I/build/netbsd-local/src/sys/rump/dev/lib/libusb/../../../include 
-I/build/netbsd-local/src/sys/rump/dev/lib/libusb/../../../librump/rumpkern/opt 
-nostdinc -isystem /build/netbsd-local/src/sys/rump/dev/lib/libusb/../../../.. 
-D__NetBSD__   
/build/netbsd-local/src/sys/rump/dev/lib/libusb/../../../../dev/usb/usbdi.c
/build/netbsd-local/src/sys/rump/dev/lib/libusb/../../../../dev/usb/usbdi.c:38:21:
 error: opt_usb.h: No such file or directory
nbmkdep: compile failed.
*** [usbdi.d] Error code 1

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