libxml-parser-perl: correct SRC_URI

(From OE-Core rev: d2a7186bfc819cc52901b8cf8086d53342586a60)

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit b3e44bbf9972968076f06ecac027bd7a2f3fe781)
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/recipes-devtools/perl/libxml-parser-perl_2.47.bb

@@ -6,7 +6,7 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=4342f85bf14a1fdd6a751573f1e61c03"
 
 DEPENDS += "expat"
 
-SRC_URI = "${CPAN_MIRROR}/modules/by-module/XML/XML-Parser-${PV}.tar.gz \
+SRC_URI = "http://www.cpan.org/modules/by-module/XML/XML-Parser-${PV}.tar.gz \
            file://0001-Makefile.PL-make-check_lib-cross-friendly.patch \
            "