openvswitch: unset CONFIG_AUTOREMOVE

Phase 2 buildbots with this option enabled will cleanup openvswitch
build dir which is needed later when building ovn

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

net/openvswitch/Makefile

@@ -272,6 +272,8 @@ endif
 TARGET_CFLAGS += -flto -std=gnu99
 MAKE_VARS += PYTHONPATH="$(HOST_PYTHON3PATH)"
 
+override CONFIG_AUTOREMOVE=
+
 $(foreach p,$(ovs_kmod_packages),\
   $(eval $(call KernelPackage,$(p)))\
 )