rpmsg: glink: Add missing MODULE_LICENSE

The qcom_glink_native driver is missing a MODULE_LICENSE(), correct
this.

Fixes: 835764ddd9af ("rpmsg: glink: Move the common glink protocol implementation to glink_native.c")
Cc: stable@vger.kernel.org
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/rpmsg/qcom_glink_native.c

@@ -1641,3 +1641,6 @@ void qcom_glink_native_unregister(struct qcom_glink *glink)
 	device_unregister(glink->dev);
 }
 EXPORT_SYMBOL_GPL(qcom_glink_native_unregister);
+
+MODULE_DESCRIPTION("Qualcomm GLINK driver");
+MODULE_LICENSE("GPL v2");