rpmsg: glink: Fix missing mutex_init() in qcom_glink_alloc_channel()

qcom_glink_alloc_channel() allocates the mutex but not initialize it.
Use mutex_init() on it to initialize it correctly.

This is detected by Coccinelle semantic patch.
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/rpmsg/qcom_glink_native.c

@@ -221,6 +221,7 @@ static struct glink_channel *qcom_glink_alloc_channel(struct qcom_glink *glink,
 	/* Setup glink internal glink_channel data */
 	spin_lock_init(&channel->recv_lock);
 	spin_lock_init(&channel->intent_lock);
+	mutex_init(&channel->intent_req_lock);
 
 	channel->glink = glink;
 	channel->name = kstrdup(name, GFP_KERNEL);