net: mvpp2: mvpp2_check_hw_buf_num() can be static

Fixes: effbf5f58d ("net: mvpp2: update the BM buffer free/destroy logic")
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/mvpp2.c

@@ -4295,7 +4295,7 @@ static void mvpp2_bm_bufs_free(struct device *dev, struct mvpp2 *priv,
 }
 
 /* Check number of buffers in BM pool */
-int mvpp2_check_hw_buf_num(struct mvpp2 *priv, struct mvpp2_bm_pool *bm_pool)
+static int mvpp2_check_hw_buf_num(struct mvpp2 *priv, struct mvpp2_bm_pool *bm_pool)
 {
 	int buf_num = 0;