Update to latest stable-2.5 revision.
* Drop Fix-alignment-problems-on-targets-not-supporting-una.patch, merged
upstream.
* New build-dependency on libxml2, so inherit pkgconfig so the test works and
delete the copy of libxml.m4 that overrides our sysroot.
Based on a patch from Yasir-Khan <yasir_khan@mentor.com>.
(From OE-Core rev: 19c16a45a3410b9ecae8682b628f2badffec9375)
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
ccec199442