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>
diff --git a/drivers/net/wireless/adm8211.c b/drivers/net/wireless/adm8211.c
index 0ac09a2..97afcec 100644
--- a/drivers/net/wireless/adm8211.c
+++ b/drivers/net/wireless/adm8211.c
@@ -1738,8 +1738,7 @@
 		return -ENOMEM;
 	}
 
-	priv->tx_ring = (struct adm8211_desc *)(priv->rx_ring +
-						priv->rx_ring_size);
+	priv->tx_ring = priv->rx_ring + priv->rx_ring_size;
 	priv->tx_ring_dma = priv->rx_ring_dma +
 			    sizeof(struct adm8211_desc) * priv->rx_ring_size;