tools: exit setup script without prompt
tools: exit setup script without prompt

Exit tools/setup.sh script without prompting "Press enter to continue".

The script can now be exited by typing the option number, "quit" or "q".

Signed-off-by: John McNamara <af31595c36a4239b9676e9b3a777d3e2f15a6c4d@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk