Bluetooth: Fix permission of hci_ath.c

.c file shall not have the 'x' permission.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/drivers/bluetooth/hci_ath.c b/drivers/bluetooth/hci_ath.c
old mode 100755
new mode 100644