staging: vchiq_arm: Register vcsm-cma as a platform driver

raspberrypi inclusion
category: feature
bugzilla: 50432

--------------------------------

Following the same pattern as bcm2835-camera and bcm2835-audio,
register the vcsm-cma driver as a platform driver
Signed-off-by: NDave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: NFang Yafen <yafen@iscas.ac.cn>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c

@@ -109,6 +109,7 @@ static struct class  *vchiq_class;
 static DEFINE_SPINLOCK(msg_queue_spinlock);
 static struct platform_device *bcm2835_camera;
 static struct platform_device *bcm2835_audio;
+static struct platform_device *vcsm_cma;
 
 static struct vchiq_drvdata bcm2835_drvdata = {
 	.cache_line_size = 32,
@@ -2763,6 +2764,7 @@ static int vchiq_probe(struct platform_device *pdev)
 		VCHIQ_VERSION, VCHIQ_VERSION_MIN,
 		MAJOR(vchiq_devid), MINOR(vchiq_devid));
 
+	vcsm_cma = vchiq_register_child(pdev, "vcsm-cma");
 	bcm2835_camera = vchiq_register_child(pdev, "bcm2835-camera");
 	bcm2835_audio = vchiq_register_child(pdev, "bcm2835_audio");
 
@@ -2779,6 +2781,7 @@ static int vchiq_remove(struct platform_device *pdev)
 {
 	platform_device_unregister(bcm2835_audio);
 	platform_device_unregister(bcm2835_camera);
+	platform_device_unregister(vcsm_cma);
 	vchiq_debugfs_deinit();
 	device_destroy(vchiq_class, vchiq_devid);
 	cdev_del(&vchiq_cdev);