btmrvl: set irq_bt to -1 when failed to parse it

The irq_of_parse_and_map will return 0 as a invalid irq.

Set irq_bt to -1 in this case, so that the btmrvl resume/suspend code
would not try to enable/disable it.
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

drivers/bluetooth/btmrvl_sdio.c

@@ -97,6 +97,7 @@ static int btmrvl_sdio_probe_of(struct device *dev,
 		cfg->irq_bt = irq_of_parse_and_map(card->plt_of_node, 0);
 		if (!cfg->irq_bt) {
 			dev_err(dev, "fail to parse irq_bt from device tree");
+			cfg->irq_bt = -1;
 		} else {
 			ret = devm_request_irq(dev, cfg->irq_bt,
 					       btmrvl_wake_irq_bt,