use XML::Simple;
..
my @outputInfo = qx[$cmd];

# Discard that pesky first line, without needing to know
# what the line ending chars are
shift @outputInfo;

# Join array to make a single string, with line endings
# being turned into line endings (but not necessarily
# exactly the same line endings as the command may have
# used, depending on your OS, and/or the internals of the
# command)
my $ref = XMLin(join("\n", @outputInfo));