[Patch] uml: fix another build error

[WANG Cong <xiyou.wangcong@gmail.com>]

Fixed this error:

  CC      arch/um/drivers/vde_user.o
  /home/wangcong/Projects/linux-2.6/arch/um/drivers/vde_user.c: In
function ‘vde_init_libstuff’:
/home/wangcong/Projects/linux-2.6/arch/um/drivers/vde_user.c:81:
error: implicit declaration of function ‘kmalloc’
/home/wangcong/Projects/linux-2.6/arch/um/drivers/vde_user.c:81:
warning: assignment makes pointer from integer without a cast
make[2]: *** [arch/um/drivers/vde_user.o] Error 1
make[1]: *** [arch/um/drivers/vde_user.ko] Error 2
make: *** [sub-make] Error 2

Signed-off-by: WANG Cong <wangcong@zeuux.org>
Cc: jdike@addtoit.com

---
diff --git a/arch/um/drivers/vde_user.c b/arch/um/drivers/vde_user.c
index 56533db..744eacf 100644
--- a/arch/um/drivers/vde_user.c
+++ b/arch/um/drivers/vde_user.c
@@ -78,7 +78,7 @@ void vde_init_libstuff(struct vde_data *vpri, struct vde_init *init)
 {
 	struct vde_open_args *args;
 
-	vpri->args = kmalloc(sizeof(struct vde_open_args), UM_GFP_KERNEL);
+	vpri->args = uml_kmalloc(sizeof(struct vde_open_args), UM_GFP_KERNEL);
 	if (vpri->args == NULL) {
 		printk(UM_KERN_ERR "vde_init_libstuff - vde_open_args "
 		       "allocation failed");