staging: lustre: llite: Use kcalloc not kzalloc with mult

This patch fixes the following checkpatch.pl warnings:
WARNING: Prefer kcalloc over kzalloc with multiply
166: FILE: drivers/staging/lustre/lustre/llite/dir.c:166:
	page_pool = kzalloc(sizeof(page) * max_pages, GFP_NOFS);
796: FILE: drivers/staging/lustre/lustre/llite/lloop.c:796:
	loop_dev = kzalloc(max_loop * sizeof(*loop_dev), GFP_KERNEL);
800: FILE: drivers/staging/lustre/lustre/llite/lloop.c:800:
	disks = kzalloc(max_loop * sizeof(*disks), GFP_KERNEL);
Signed-off-by: Tina Ruchandani <ruchandani.tina@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/llite/dir.c

@@ -163,7 +163,7 @@ static int ll_dir_filler(void *_hash, struct page *page0)
 
 	LASSERT(max_pages > 0 && max_pages <= MD_MAX_BRW_PAGES);
 
-	page_pool = kzalloc(sizeof(page) * max_pages, GFP_NOFS);
+	page_pool = kcalloc(max_pages, sizeof(page), GFP_NOFS);
 	if (page_pool) {
 		page_pool[0] = page0;
 	} else {

drivers/staging/lustre/lustre/llite/lloop.c

@@ -793,11 +793,11 @@ static int __init lloop_init(void)
 	if (ll_iocontrol_magic == NULL)
 		goto out_mem1;
 
-	loop_dev = kzalloc(max_loop * sizeof(*loop_dev), GFP_KERNEL);
+	loop_dev = kcalloc(max_loop, sizeof(*loop_dev), GFP_KERNEL);
 	if (!loop_dev)
 		goto out_mem1;
 
-	disks = kzalloc(max_loop * sizeof(*disks), GFP_KERNEL);
+	disks = kcalloc(max_loop, sizeof(*disks), GFP_KERNEL);
 	if (!disks)
 		goto out_mem2;