NFC: nfcmrvl: free reset gpio

Reset GPIO shall be freed by the driver since the device used
in devm_ calls can be still valid on unregister.

If user removes the module and inserts it again, the devm_gpio_request
will fail because the underlying physical device (e.g i2c) was not
removed so the device management won't have freed the gpio.
Signed-off-by: Vincent Cuissard <cuissard@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/nfc/nfcmrvl/main.c

@@ -194,6 +194,9 @@ void nfcmrvl_nci_unregister_dev(struct nfcmrvl_private *priv)
 
 	nfcmrvl_fw_dnld_deinit(priv);
 
+	if (priv->config.reset_n_io)
+		devm_gpio_free(priv->dev, priv->config.reset_n_io);
+
 	nci_unregister_device(ndev);
 	nci_free_device(ndev);
 	kfree(priv);