Storage-Bus: Refine the trait methods to include some generic APIs like Read, Write, Lock, etc

[Shaibal-Microsoft]

This issue is to track -

1 - Include generic storage API like read, write, lock, unlock, power on/off, chip reset, etc
2 - Analyze impact of power management between storage and storage bus

[Shaibal-Microsoft]

@JamesHuard @jerrysxie FYI