Bluetooth: hci_qca: Return wakeup for qca_wakeup

This fixes the return value of qca_wakeup(), since
.wakeup work inversely with original .prevent_wake.

Fixes: 4539ca67 (Bluetooth: Rename driver .prevent_wake to .wakeup)
Signed-off-by: Sai Teja Aluvala <quic_saluvala@quicinc.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>