staging: vchiq_arm: Fix MODULE_LICENSE

Regarding to the header the driver is licensed under BSD and GPL.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

@@ -3490,6 +3490,6 @@ static struct platform_driver vchiq_driver = {
 };
 module_platform_driver(vchiq_driver);
 
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("Dual BSD/GPL");
 MODULE_DESCRIPTION("Videocore VCHIQ driver");
 MODULE_AUTHOR("Broadcom Corporation");