UefiPayloadPkg: Update ReadUnaligned64 in ACPI parsing #272

Job	Run time
Analyze (ArmPkg, IA32,X64)	4m 10s
Analyze (CryptoPkg, IA32)	18m 7s
Analyze (CryptoPkg, X64)	18m 26s
Analyze (DynamicTablesPkg, IA32,X64)	12m 3s
Analyze (FatPkg, IA32,X64)	9m 16s
Analyze (FmpDevicePkg, IA32,X64)	9m 28s
Analyze (IntelFsp2Pkg, IA32,X64)	9m 15s
Analyze (IntelFsp2WrapperPkg, IA32,X64)	9m 14s
Analyze (MdeModulePkg, IA32)	14m 12s
Analyze (MdeModulePkg, X64)	17m 43s
Analyze (MdePkg, IA32,X64)	13m 28s
Analyze (PcAtChipsetPkg, IA32,X64)	10m 54s
Analyze (PrmPkg, IA32,X64)	10m 57s
Analyze (SecurityPkg, IA32,X64)	9m 4s
Analyze (ShellPkg, IA32,X64)	13m 7s
Analyze (SourceLevelDebugPkg, IA32,X64)	8m 36s
Analyze (StandaloneMmPkg, IA32,X64)	10m 23s
Analyze (UefiCpuPkg, IA32,X64)	9m 23s
Analyze (UnitTestFrameworkPkg, IA32,X64)	10m 36s
	3h 38m 22s

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