OvmfPkg: Introduce UEFI shell support for fw_cfg #7349

Job	Run time
Analyze (ArmPkg, IA32,X64)	3m 50s
Analyze (CryptoPkg, IA32)	15m 55s
Analyze (CryptoPkg, X64)	17m 13s
Analyze (DynamicTablesPkg, IA32,X64)	9m 37s
Analyze (FatPkg, IA32,X64)	9m 26s
Analyze (FmpDevicePkg, IA32,X64)	7m 16s
Analyze (IntelFsp2Pkg, IA32,X64)	8m 39s
Analyze (IntelFsp2WrapperPkg, IA32,X64)	9m 26s
Analyze (MdeModulePkg, IA32)	11m 36s
Analyze (MdeModulePkg, X64)	15m 44s
Analyze (MdePkg, IA32,X64)	12m 6s
Analyze (PcAtChipsetPkg, IA32,X64)	6m 22s
Analyze (PrmPkg, IA32,X64)	8m 36s
Analyze (SecurityPkg, IA32,X64)	9m 3s
Analyze (ShellPkg, IA32,X64)	13m 19s
Analyze (SourceLevelDebugPkg, IA32,X64)	11m 43s
Analyze (StandaloneMmPkg, IA32,X64)	6m 30s
Analyze (UefiCpuPkg, IA32,X64)	12m 9s
Analyze (UnitTestFrameworkPkg, IA32,X64)	11m 39s
	3h 20m 9s

Provide feedback