NetBpfLoad: gently enable mainline

Only the non-CRITICAL test@mainline.o is loaded from netbpfload
on T and U < QPR3, everything else is loaded by platform bpfloader

Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: Ic07a57cf93851d3a1411b62c97d8ce057507360b
diff --git a/bpf_progs/netd.c b/bpf_progs/netd.c
index a6d702b..bd7b8b4 100644
--- a/bpf_progs/netd.c
+++ b/bpf_progs/netd.c
@@ -679,3 +679,4 @@
 LICENSE("Apache 2.0");
 CRITICAL("Connectivity and netd");
 DISABLE_BTF_ON_USER_BUILDS();
+DISABLE_ON_MAINLINE_BEFORE_U_QPR3();