ghOSt: Fix open source build error
ghOSt: Fix open source build error

See tg/1513219. Fixes https://github.com/google/ghost-userspace/issues/20.

bpf_helper_defs.h generated from a ghost kernel already contains these magic numbers, but in our own internal testing we often build on a non-ghost kernel.

Tested=built userspace repo on non-ghost kernel as well as ghost kernel

google/ghost-userspace,google/ghost-userspace,google/ghost-userspace,google/ghost-userspace