quagga: fix static linking

This commit adds a patch to quagga's configure.ac to fix a library
ordering problem that is causing a build failure in static linking
scenario.

Fixes:

  http://autobuild.buildroot.org/results/c08/c086f3128232af70d24fd5faf9282ce91d6488ef/



Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>