Add NVRAM file for the BCM43454-based AP6254 WiFi/BT module found on Radxa Rock Pi X Single Board Computer. BCM43454 is compatible with BCM43455 and recognized as the same chip in kernel [1]. [1] https://lore.kernel.org/all/CO1PR11MB47859B51BCA88613D1582EB88E2E9@CO1PR11MB4785.namprd11.prod.outlook.com Signed-off-by: Kagurazaka Kotori <kagurazakakotori@gmail.com>