staging: wfx: fix cast operator

Sparse detects that le16_to_cpup() expects a __le16 * as argument.

Change the cast operator to be compliant with sparse.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200512150414.267198-4-Jerome.Pouiller@silabs.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/wfx/bh.c

@@ -70,7 +70,7 @@ static int rx_helper(struct wfx_dev *wdev, size_t read_len, int *is_cnf)
 	if (wfx_data_read(wdev, skb->data, alloc_len))
 		goto err;
 
-	piggyback = le16_to_cpup((u16 *)(skb->data + alloc_len - 2));
+	piggyback = le16_to_cpup((__le16 *)(skb->data + alloc_len - 2));
 	_trace_piggyback(piggyback, false);
 
 	hif = (struct hif_msg *)skb->data;

drivers/staging/wfx/traces.h

@@ -184,7 +184,7 @@ DECLARE_EVENT_CLASS(hif_data,
 		if (!is_recv &&
 		    (__entry->msg_id == HIF_REQ_ID_READ_MIB ||
 		     __entry->msg_id == HIF_REQ_ID_WRITE_MIB)) {
-			__entry->mib = le16_to_cpup((u16 *) hif->body);
+			__entry->mib = le16_to_cpup((__le16 *)hif->body);
 			header_len = 4;
 		} else {
 			__entry->mib = -1;