1. Set the Target array to zero before fill the target id.

1. Set the Target array to zero before fill the target id.
2. Get the command/control register base address for each channel through IDE common registers.
3. Correctify some return status to sync with newest Uefi Spec 2.1

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@3901 6f19259b-4bc3-4df7-8a09-765794883524