nfc: pn533/usb.c: fix spelling of "functions"

Fix typo/spello of "functions".

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: linux-nfc@lists.01.org
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org
Cc: Jiri Kosina <trivial@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/nfc/pn533/usb.c

@@ -210,7 +210,7 @@ static void pn533_usb_abort_cmd(struct pn533 *dev, gfp_t flags)
 	usb_kill_urb(phy->in_urb);
 }
 
-/* ACR122 specific structs and fucntions */
+/* ACR122 specific structs and functions */
 
 /* ACS ACR122 pn533 frame definitions */
 #define PN533_ACR122_TX_FRAME_HEADER_LEN (sizeof(struct pn533_acr122_tx_frame) \