1. According to PI errata 0000840 and PI 1.2c Vol 3 3.2.3, remove description rows...

1. According to PI errata 0000840 and PI 1.2c Vol 3 3.2.3, remove description rows that start with a Required Alignment (bytes) of 2, 4, and 8.
2. In PeiFfsFvPpiGetFileInfo(), FileHeader->Attributes needs to be converted to EFI_FV_FILE_ATTRIBUTES from EFI_FFS_FILE_ATTRIBUTES before it is assigned to FileInfo->FileAttributes.
3. Set EFI_FV_FILE_ATTRIB_FIXED and EFI_FV_FILE_ATTRIB_MEMORY_MAPPED bits for EFI_FV_FILE_ATTRIBUTES based on the FFS file and FV image.

Signed-off-by: lzeng14
Reviewed-by: lgao4
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12776 6f19259b-4bc3-4df7-8a09-765794883524