MdePkg/Nvme.h: Add missing NVMe capability descriptions #1

Job	Run time
Gather Repo Packages	7s
Analyze (CryptoPkg)	22m 0s
Analyze (MdeModulePkg)	6m 58s
Analyze (MdePkg)	11m 16s
Analyze (NetworkPkg)	13m 19s
Analyze (PcAtChipsetPkg)	9m 32s
Analyze (ShellPkg)	12m 33s
Analyze (StandaloneMmPkg)	9m 33s
Analyze (UefiCpuPkg)	11m 49s
Analyze (UnitTestFrameworkPkg)	11m 16s
	1h 48m 23s

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