brcmfmac: fix typos

Fix spelling mistakes in brcmfmac: "lenght" -> "length".
The typos are also in the special comment blocks which
translates to documentation.
Signed-off-by: Matteo Croce <mcroce@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h

@@ -36,7 +36,7 @@
 #define BRCMF_DCMD_MEDLEN	1536
 #define BRCMF_DCMD_MAXLEN	8192
 
-/* IOCTL from host to device are limited in lenght. A device can only handle
+/* IOCTL from host to device are limited in length. A device can only handle
  * ethernet frame size. This limitation is to be applied by protocol layer.
  */
 #define BRCMF_TX_IOCTL_MAX_MSG_SIZE	(ETH_FRAME_LEN+ETH_FCS_LEN)

drivers/net/wireless/broadcom/brcm80211/brcmfmac/firmware.c

@@ -47,7 +47,7 @@ enum nvram_parser_state {
  * @state: current parser state.
  * @data: input buffer being parsed.
  * @nvram: output buffer with parse result.
- * @nvram_len: lenght of parse result.
+ * @nvram_len: length of parse result.
  * @line: current line.
  * @column: current column in line.
  * @pos: byte offset in input buffer.

drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.h

@@ -266,7 +266,7 @@ struct brcmf_event {
  * @status: status information.
  * @reason: reason code.
  * @auth_type: authentication type.
- * @datalen: lenght of event data buffer.
+ * @datalen: length of event data buffer.
  * @addr: ether address.
  * @ifname: interface name.
  * @ifidx: interface index.

drivers/net/wireless/broadcom/brcm80211/brcmfmac/usb.c

@@ -508,7 +508,7 @@ static void brcmf_usb_rx_complete(struct urb *urb)
 	skb = req->skb;
 	req->skb = NULL;
 
-	/* zero lenght packets indicate usb "failure". Do not refill */
+	/* zero length packets indicate usb "failure". Do not refill */
 	if (urb->status != 0 || !urb->actual_length) {
 		brcmu_pkt_buf_free_skb(skb);
 		brcmf_usb_enq(devinfo, &devinfo->rx_freeq, req, NULL);