NetBpfLoad: slow down V boot on unsupported kernels

(such kernels are already in violation of VTS)

I don't quite want to break boot, but I figure a slow
boot will result in devices getting fixed rather than
released with ancient/unsupported/buggy kernels...

Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Ia2cf550f661ce468acbc5ecff0ce5b6fa16b0e3a
1 file changed