bpf2go: ergonomic enums #1483

Job	Run time
Build and Lint	2m 7s
Build Documentation	22s
Run tests on previous stable Go	5m 43s
Run tests (mainline)	1m 4s
Run tests on arm64	46s
Run tests (stable)	1m 6s
Run tests (6.6)	1m 5s
Run tests (6.1)	58s
Run tests (5.15)	1m 8s
Run tests (5.10)	1m 10s
Run tests (5.4)	1m 5s
Run tests (4.19)	1m 13s
Run tests (4.14)	1m 8s
Run tests (4.9)	1m 1s
	19m 56s

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