ethernet: Remove casts to same type

Adding casts of objects to the same type is unnecessary
and confusing for a human reader.

For example, this cast:

        int y;
        int *p = (int *)&y;

I used the coccinelle script below to find and remove these
unnecessary casts.  I manually removed the conversions this
script produces of casts with __force, __iomem and __user.

@@
type T;
T *p;
@@

-       (T *)p
+       p

A function in atl1e_main.c was passed a const pointer
when it actually modified elements of the structure.

Change the argument to a non-const pointer.

A function in stmmac needed a __force to avoid a sparse
warning.  Added it.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/ucc_geth.c

@@ -185,7 +185,7 @@ static void mem_disp(u8 *addr, int size)
 	for (; (u32) i < (u32) addr + size4Aling; i += 4)
 		printk("%08x ", *((u32 *) (i)));
 	for (; (u32) i < (u32) addr + size; i++)
-		printk("%02x", *((u8 *) (i)));
+		printk("%02x", *((i)));
 	if (notAlign == 1)
 		printk("\r\n");
 }