Bluetooth: hci_qca: Changed unsigned long to bool

'retransmit' being set in HCI_IBS_TX_WAKING case, using bool would be
efficient. Initialize local bool to false.

Signed-off-by: Prasanna Karthik <mkarthi3@visteon.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>