[TPM][FF-A] Add Yield to FF-A Library

[Raymond-MS]

Description

Add the FF-A command to the FF-A library

For details on how to complete these options and their meaning refer to CONTRIBUTING.md.

• Impacts functionality?
• Impacts security?
• Breaking change?
• Includes tests?
• Includes documentation?

How This Was Tested

Built QEMU SBSA with TPM enabled and Yielding implemented in the TPM Service

Integration Instructions

N/A

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (release/202502@c6be3e4). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
MdeModulePkg/Library/ArmFfaLib/ArmFfaCommon.c	0.00%	2 Missing ⚠️

Additional details and impacted files

@@                Coverage Diff                @@
##             release/202502    #1532   +/-   ##
=================================================
  Coverage                  ?    2.22%           
=================================================
  Files                     ?     1461           
  Lines                     ?   380896           
  Branches                  ?     4583           
=================================================
  Hits                      ?     8477           
  Misses                    ?   372346           
  Partials                  ?       73           

Flag	Coverage Δ
MdeModulePkg	1.55% <0.00%> (?)
MdePkg	5.46% <ø> (?)
NetworkPkg	0.55% <ø> (?)
PolicyServicePkg	30.42% <ø> (?)
UefiCpuPkg	4.85% <ø> (?)
UnitTestFrameworkPkg	11.40% <ø> (?)

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