OvmfPkg/MicroVM: use PeiPcdLib for PEI_CORE #298

Job	Run time
Analyze (ArmPkg, IA32,X64)	3m 48s
Analyze (CryptoPkg, IA32)	13m 46s
Analyze (CryptoPkg, X64)	17m 32s
Analyze (DynamicTablesPkg, IA32,X64)	7m 30s
Analyze (FatPkg, IA32,X64)	7m 2s
Analyze (FmpDevicePkg, IA32,X64)	10m 57s
Analyze (IntelFsp2Pkg, IA32,X64)	8m 34s
Analyze (IntelFsp2WrapperPkg, IA32,X64)	9m 34s
Analyze (MdeModulePkg, IA32)	11m 51s
Analyze (MdeModulePkg, X64)	12m 33s
Analyze (MdePkg, IA32,X64)	11m 51s
Analyze (PcAtChipsetPkg, IA32,X64)	10m 27s
Analyze (PrmPkg, IA32,X64)	10m 34s
Analyze (SecurityPkg, IA32,X64)	11m 22s
Analyze (ShellPkg, IA32,X64)	12m 6s
Analyze (SourceLevelDebugPkg, IA32,X64)	10m 30s
Analyze (StandaloneMmPkg, IA32,X64)	9m 4s
Analyze (UefiCpuPkg, IA32,X64)	12m 42s
Analyze (UnitTestFrameworkPkg, IA32,X64)	10m 45s
	3h 22m 28s

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