wireless: 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

Neatened the mwifiex_deauthenticate_infra function which
was doing odd things with array pointers and not using
is_zero_ether_addr.

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

drivers/net/wireless/ath/carl9170/cmd.c

@@ -138,7 +138,7 @@ int carl9170_reboot(struct ar9170 *ar)
 	if (!cmd)
 		return -ENOMEM;
 
-	err = __carl9170_exec_cmd(ar, (struct carl9170_cmd *)cmd, true);
+	err = __carl9170_exec_cmd(ar, cmd, true);
 	return err;
 }