EMMC 5.1协议标准

EMMC-5.1协议标准， Changes from version 5.01 to 5.1  Added Command Queuing  Added Enhanced Strobe in HS400 Mode  Added Cache Barrier  Added Cache Flushing report  Added RPMB Throughput Improve. Support write data size 8KB (thirty two 512B frames)  Added Background Operation Control  Added Secure W