Before make it working I would suggest to connect both of the cs0 and cs1.
Run the master first may be make a script like
./spidev_test -D /dev/spidev0.0 -s 150000 -n100 -g30 -p4 -z
sleep 1
./spidev_test -D /dev/spidev0.1 -s 150000 -n100 -g30 -p4 -z