bpf: sync bpf.h uapi header with upstream kernel
bpf: sync bpf.h uapi header with upstream kernel

It's needed for the test case of LRU map, so that compilation doesn't
fail for the probe and later on BPF bits.

Signed-off-by: Daniel Borkmann <3d0f3b9ddcacec30c4008c5e030e6c13a478cb4f@cilium.io>

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