octeontx2-af: Use kzalloc for allocating only one thing

Use kzalloc rather than kcalloc(1,...)

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
@@

- kcalloc(1,
+ kzalloc(
          ...)
// </smpl>
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/marvell/octeontx2/af/cgx.c

@@ -867,7 +867,7 @@ static int cgx_lmac_init(struct cgx *cgx)
 		cgx->lmac_count = MAX_LMAC_PER_CGX;
 
 	for (i = 0; i < cgx->lmac_count; i++) {
-		lmac = kcalloc(1, sizeof(struct lmac), GFP_KERNEL);
+		lmac = kzalloc(sizeof(struct lmac), GFP_KERNEL);
 		if (!lmac)
 			return -ENOMEM;
 		lmac->name = kcalloc(1, sizeof("cgx_fwi_xxx_yyy"), GFP_KERNEL);