IB/mlx5: Fix duplicate const warning

Fixes the following sparse warning:

drivers/infiniband/hw/mlx5/main.c:2574:25: warning: duplicate const

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/mlx5/main.c

@@ -2576,7 +2576,7 @@ dealloc_counters:
 	return ret;
 }
 
-static const char const *names[] = {
+static const char * const names[] = {
 	"rx_write_requests",
 	"rx_read_requests",
 	"rx_atomic_requests",