usb: ci_udc: don't memalign() struct ci_req allocations

struct ci_req is a purely software structure, and needs no specific
memory alignment. Hence, allocate it with calloc() rather than
memalign(). The use of memalign() was left-over from when struct ci_req
was going to hold the aligned bounce buffer, but this is now dynamically
allocated.

Signed-off-by: Stephen Warren <swarren@nvidia.com>

drivers/usb/gadget/ci_udc.c

@@ -222,12 +222,11 @@ ci_ep_alloc_request(struct usb_ep *ep, unsigned int gfp_flags)
 	if (num == 0 && controller.ep0_req)
 		return &controller.ep0_req->req;
 
-	ci_req = memalign(ARCH_DMA_MINALIGN, sizeof(*ci_req));
+	ci_req = calloc(1, sizeof(*ci_req));
 	if (!ci_req)
 		return NULL;
 
 	INIT_LIST_HEAD(&ci_req->queue);
-	ci_req->b_buf = 0;
 
 	if (num == 0)
 		controller.ep0_req = ci_req;