net/ibm/emac: use swap() in emac_make_bootlist()

Use kernel.h macro definition.

Thanks to Julia Lawall for Coccinelle scripting support.
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/ibm/emac/core.c

@@ -2999,7 +2999,7 @@ static struct platform_driver emac_driver = {
 static void __init emac_make_bootlist(void)
 {
 	struct device_node *np = NULL;
-	int j, max, i = 0, k;
+	int j, max, i = 0;
 	int cell_indices[EMAC_BOOT_LIST_SIZE];
 
 	/* Collect EMACs */
@@ -3026,12 +3026,8 @@ static void __init emac_make_bootlist(void)
 	for (i = 0; max > 1 && (i < (max - 1)); i++)
 		for (j = i; j < max; j++) {
 			if (cell_indices[i] > cell_indices[j]) {
-				np = emac_boot_list[i];
-				emac_boot_list[i] = emac_boot_list[j];
-				emac_boot_list[j] = np;
-				k = cell_indices[i];
-				cell_indices[i] = cell_indices[j];
-				cell_indices[j] = k;
+				swap(emac_boot_list[i], emac_boot_list[j]);
+				swap(cell_indices[i], cell_indices[j]);
 			}
 		}
 }