examples/exception_path: align stats on cache line

Align stats structure to cache line to prevent bouncing per CPU stats
structure between cache lines.

Fixes: af75078fec ("first public release")
Cc: stable@dpdk.org

Signed-off-by: Dustin Lundquist <dustin@null-ptr.net>
Acked-by: Remy Horton <remy.horton@intel.com>

examples/exception_path/main.c

@@ -108,7 +108,7 @@ struct stats {
 	uint64_t rx;
 	uint64_t tx;
 	uint64_t dropped;
-};
+} __rte_cache_aligned;
 
 /* Array of lcore-specific stats */
 static struct stats lcore_stats[RTE_MAX_LCORE];