treewide: Replace more open-coded allocation size multiplications

As done treewide earlier, this catches several more open-coded
allocation size calculations that were added to the kernel during the
merge window. This performs the following mechanical transformations
using Coccinelle:

	kvmalloc(a * b, ...) -> kvmalloc_array(a, b, ...)
	kvzalloc(a * b, ...) -> kvcalloc(a, b, ...)
	devm_kzalloc(..., a * b, ...) -> devm_kcalloc(..., a, b, ...)

Signed-off-by: Kees Cook <keescook@chromium.org>

net/sched/sch_cake.c

@@ -2644,7 +2644,7 @@ static int cake_init(struct Qdisc *sch, struct nlattr *opt,
 	for (i = 1; i <= CAKE_QUEUES; i++)
 		quantum_div[i] = 65535 / i;
 
-	q->tins = kvzalloc(CAKE_MAX_TINS * sizeof(struct cake_tin_data),
+	q->tins = kvcalloc(CAKE_MAX_TINS, sizeof(struct cake_tin_data),
 			   GFP_KERNEL);
 	if (!q->tins)
 		goto nomem;