Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index b372fb8..42d5ff0 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1877,7 +1877,7 @@
 	read_unlock(&hci_task_lock);
 }
 
-/* ----- HCI RX task (incoming data proccessing) ----- */
+/* ----- HCI RX task (incoming data processing) ----- */
 
 /* ACL data packet */
 static inline void hci_acldata_packet(struct hci_dev *hdev, struct sk_buff *skb)