MdeModulePkg/DxeCapsuleLibFmp:Added PCD for EmbeddedDriver Support #1

Job	Run time
Build UPL GCC (ubuntu-latest, 3.12, GCC, DEBUG, FIT_BUILD=TRUE) / Build Platform	4m 29s
Build UPL GCC (ubuntu-latest, 3.12, GCC, DEBUG, FIT_BUILD=FALSE) / Build Platform	4m 27s
Build UPL VS2022 (windows-latest, 3.12, VS2022, DEBUG, FIT_BUILD=TRUE) / Build Platform	8m 33s
Build UPL VS2022 (windows-latest, 3.12, VS2022, DEBUG, FIT_BUILD=FALSE) / Build Platform	7m 5s
	24m 34s

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