libdns requires libxml2 if bind was built with libxml2 support
enabled. Compilation will fail for omapip/test.c in case
-lxml2 isn't used during the build. So, we add losely coupled
search path which will pick up the lib if it is present.
(From OE-Core rev: a9e4edb2b5304e7493b791f3b3f76d37af5433ff)
Signed-off-by: Awais Belal <awais_belal@mentor.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>