Fix virtIO MMIO QueueNotify field #351

Job	Run time
Build and run examples (Linux x86-64 via Nix)	5m 26s
Build and run examples (Linux x86-64 via Nix)	5m 26s
Build and run examples (Linux x86-64 via Nix)	5m 26s
Build and run examples (macOS x86-64)	7m 55s
Build and run examples (macOS x86-64)	7m 55s
Build and run examples (macOS x86-64)	7m 55s
Build and run examples (macOS x86-64 via Nix)	9m 10s
Build and run examples (macOS x86-64 via Nix)	7m 58s
Build and run examples (macOS x86-64 via Nix)	9m 20s
Build and run examples (Linux x86-64)	4m 2s
Build and run examples (Linux x86-64)	4m 2s
Build and run examples (Linux x86-64)	4m 2s
Build manual	3m 53s
Build manual	3m 53s
Build manual	3m 53s
	1h 30m 16s

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