erlang-p1-xml: Add host dependencies

This should fix the error reported by autobuild:
http://autobuild.buildroot.net/results/3b4/3b474323cb50d0d5d09611fa068a9d1bd3bd4bb5/

Signed-off-by: Johan Oudinet <johan.oudinet@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
1 file changed