1) Use 0xFFEE as the VarId the reason is as follows:

1) Use 0xFFEE as the VarId the reason is as follows:
// VARSTORE ID of 0 for Buffer Storage Type Storage is reserved in UEFI IFR form. But VARSTORE ID
// 0 in Framework IFR is the default VarStore ID for storage without explicit declaration. So we have
// to reseved 0xFFEE in UEFI VARSTORE ID to represetn default storage id in Framework IFR.
// Framework VFR has to be ported or pre-processed to change the default VARSTORE to a VARSTORE
// with ID equal to 0xFFEE.

2) Update some comments

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5201 6f19259b-4bc3-4df7-8a09-765794883524