lynx: add patch to fix static link issue

lynx: add patch to fix static link issue

The lynx package incorrectly uses target LDFLAGS to build a host tool,
which causes a problem when we do a statically link build for the
target, on a host machine that doesn't support static linking.

A simple patch fixes the problematic makefile, and it has been
submitted upstream on the project mailing list.

Fixes:

  http://autobuild.buildroot.net/results/38ba2531eeeb4a7985eddd2df8bfaf0b56e6a687/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>