app/testpmd: move checksum config display in a function
app/testpmd: move checksum config display in a function

No functional changes in this commit, we just move the code
that displays the csum forward engine configuration in a
function.

This makes the next commit easier to read as it will also
use this function.

Signed-off-by: Olivier Matz <dfcc1510895413197abb4336e39bb0a3906cba71@6wind.com>
Acked-by: Jijiang Liu <10b95deab7df654d0c21c8c98b54c9a1ecf2a5c0@intel.com>

tsphillips/dpdk-fork,venkynv/dpdk-mirror,tsphillips/dpdk-fork,mixja/dpdk,msune/dpdk,mixja/dpdk,venkynv/dpdk-mirror,venkynv/dpdk-mirror,msune/dpdk,venkynv/dpdk-mirror,tsphillips/dpdk-fork,tsphillips/dpdk-fork,mixja/dpdk,john-mcnamara-intel/dpdk,mixja/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,msune/dpdk,john-mcnamara-intel/dpdk,msune/dpdk