erlang-p1-xml: bump to version 1.1.1

Signed-off-by: Frank Hunleth <fhunleth@troodon-software.com>
[Thomas:
  - add dependency on erlang-p1-utils, as noticed by Romain Naour.
  - the license is now Apache-2.0 and no longer GPLv2+.]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>