bpf: Fix default make target
bpf: Fix default make target

Commit 49a076900273 ("bpf: Add "make tags" target") accidentally made
"make tags" the default target within the bpf/ directory. Rearrange the
targets to make BPF program build the default.

Signed-off-by: Joe Stringer <16a9a54ddf4259952e3c118c763138e83693d7fd@covalent.io>

gumpt/cilium,tgraf/cilium,eloycoto/cilium,scanf/cilium,michi-covalent/cilium,tklauser/cilium,eloycoto/cilium,tklauser/cilium,gumpt/cilium,tgraf/cilium,michi-covalent/cilium,cilium/cilium,cilium/cilium,scanf/cilium,cilium-team/cilium,gumpt/cilium,tgraf/cilium,gumpt/cilium,eloycoto/cilium,cilium-team/cilium,michi-covalent/cilium,cilium/cilium,michi-covalent/cilium,cilium/cilium,michi-covalent/cilium,gumpt/cilium,tgraf/cilium,gumpt/cilium,cilium/cilium,tklauser/cilium,tgraf/cilium,gumpt/cilium,scanf/cilium,eloycoto/cilium,scanf/cilium,tklauser/cilium,scanf/cilium,tgraf/cilium,scanf/cilium,eloycoto/cilium,scanf/cilium,tklauser/cilium,eloycoto/cilium,eloycoto/cilium