libxml-sax-base-perl: add recipe for libxml-sax-perl

libxml-sax-base-perl: add recipe for libxml-sax-perl

If libxml-sax-base-perl is not installed on the target, libxml-sax-perl
would be fail to use. So add the recipe.

    # cat > test.pl <<-EOF
    #!/usr/bin/perl
    use XML::SAX;
    EOF
    # perl ./test.pl
    Can't locate XML/SAX/Exception.pm in @INC ...

Also inherit allarch for three perl modules.

Signed-off-by: Xin Ouyang <Xin.Ouyang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>