Disable USB support when CUPS disabled, otherwise host build breaks.
Fixes following autobuild error:
http://autobuild.buildroot.net/results/081b3be918ac1eaa8cfbc5919e00bc1ea267c1df/
Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
[Thomas:
- use Git formatted patch, cherry-picked from upstream
- remove --without-libusb, not needed.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>