Fixes:
http://autobuild.buildroot.org/results/9aa/9aa6818d67d9cfd0bfdf14945476c7783cc05aad/
Similar to jquery-keyboard, it seems the fb-test-app tarball on the
autobuilder is corrupt. Fix it by adding a .hash file so it falls back to
our s.b.o mirror.
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Peter Korsgaard