Align buffers to 8 bytes as per the PL111 datasheet, fix pointer cast
Align buffers to 8 bytes as per the PL111 datasheet, fix pointer cast

WalrusRPG/WalrusRPG,WalrusRPG/WalrusRPG,WalrusRPG/WalrusRPG,WalrusRPG/WalrusRPG