rpmsg: virtio_rpmsg_bus: replace "%p" with "%pK"

[ Upstream commit de4064af76537f13d74a814a962f4524e81436ac ]

The virtio_rpmsg_bus driver uses the "%p" format-specifier for
printing the vring buffer address. This prints only a hashed
pointer even for previliged users. Use "%pK" instead so that
the address can be printed during debug using kptr_restrict
sysctl.

[s-anna@ti.com: cherry-pick commit 'de4064af7653' from v5.4]
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

drivers/rpmsg/virtio_rpmsg_bus.c

@@ -943,7 +943,7 @@ static int rpmsg_probe(struct virtio_device *vdev)
 		goto vqs_del;
 	}
 
-	dev_dbg(&vdev->dev, "buffers: va %p, dma %pad\n",
+	dev_dbg(&vdev->dev, "buffers: va %pK, dma %pad\n",
 		bufs_va, &vrp->bufs_dma);
 
 	/* half of the buffers is dedicated for RX */