The branch was disabled because of a typo in the SSE4.2 flag.
Change also the x86_64 flag to use a DPDK one.
Fixes: 28377375c6c0 ("examples/ip_pipeline: fix build for x86_64 without SSE4.2")
Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
Acked-by: Cristian Dumitrescu <cristian.dumitrescu@intel.com>