test/bonding: allow disabling driver

test/bonding: allow disabling driver

The autotest application build was partially enabled for building with
the net/bond driver disabled, but a number of items were missed, leading
to build errors when the driver was disabled, e.g. by simply doing
"-Ddisable_drivers=net/*" when calling meson.

  ../app/test/test_link_bonding.c:25:10: fatal error: rte_eth_bond.h: \
	No such file or directory

With this fix in place, it's possible to build DPDK with meson with all
non-bus, non-mempool drivers disabled i.e. using meson option

-Ddisable_drivers=baseband/*,compress/*,crypto/*,event/*,net/*,raw/*,vdpa/*

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
Acked-by: Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>
Tested-by: Lukasz Wojciechowski <l.wojciechow@partner.samsung.com>