bluetooth: hci_driver: Process recvd msgs directly from SDC callback

After replacing K_FOREVER with K_NO_WAIT when requesting a buffer from
the host pool, it became possible to call `hci_driver_receive_process`
directly from the SDC callback instead of going through
`receive_signal_raise` as `hci_driver_receive_process` is now
non-blocking.

Signed-off-by: Pavel Vasilyev <[email protected]>

subsys/bluetooth/controller/hci_driver.c

@@ -1336,7 +1336,7 @@ static int hci_driver_open(const struct device *dev, bt_hci_recv_t recv_func)
 	}
 #endif
 
-	err = sdc_enable(receive_signal_raise, sdc_mempool);
+	err = sdc_enable(hci_driver_receive_process, sdc_mempool);
 	if (err) {
 		MULTITHREADING_LOCK_RELEASE();
 		return err;