Support for AMD Zen based UEFI images

[Ragebone]

This issue plans and tracks the support for AMD Zen based UEFI Images

• AMD flavored firmware handling
• AMD PSP EFS detection and construction
• AMD PSP directories
• AMD PSP structure manipulation and rebuilding
• AMD PSP firmware signature verification
• AMD PSP firmware signature resigning

Roudimentary support with ZenImages since Tag: ZenSupport