[PATCH] compat: support building for RHEL-8.2

[Jason A. Donenfeld]

Hi Ilie,

Thanks for this. Usually we don't special case RHEL point releases and
just maintain that wireguard-linux-compat only works with the latest
RHEL. Could you resubmit this using the normal ISRHEL check instead?

Do you have any idea on RHEL8.2 release date?

Thanks,
Jason