ArmPkg: Update Generic Watchdog PCD Type #7351

Job	Run time
Analyze (ArmPkg, IA32,X64)	3m 40s
Analyze (CryptoPkg, IA32)	17m 12s
Analyze (CryptoPkg, X64)	18m 17s
Analyze (DynamicTablesPkg, IA32,X64)	10m 8s
Analyze (FatPkg, IA32,X64)	9m 25s
Analyze (FmpDevicePkg, IA32,X64)	10m 8s
Analyze (IntelFsp2Pkg, IA32,X64)	10m 10s
Analyze (IntelFsp2WrapperPkg, IA32,X64)	11m 15s
Analyze (MdeModulePkg, IA32)	15m 2s
Analyze (MdeModulePkg, X64)	15m 43s
Analyze (MdePkg, IA32,X64)	12m 0s
Analyze (PcAtChipsetPkg, IA32,X64)	9m 25s
Analyze (PrmPkg, IA32,X64)	11m 0s
Analyze (SecurityPkg, IA32,X64)	9m 11s
Analyze (ShellPkg, IA32,X64)	11m 2s
Analyze (SourceLevelDebugPkg, IA32,X64)	9m 35s
Analyze (StandaloneMmPkg, IA32,X64)	9m 55s
Analyze (UefiCpuPkg, IA32,X64)	14m 28s
Analyze (UnitTestFrameworkPkg, IA32,X64)	6m 51s
	3h 34m 27s

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