docs: add latest eBPF helpers to features list
@@ -130,6 +130,10 @@ Helper | Kernel version | Commit
`BPF_FUNC_map_delete_elem()` | 3.19 | [`d0003ec01c66`](https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0003ec01c667b731c139e23de3306a8b328ccf5)
`BPF_FUNC_map_lookup_elem()` | 3.19 | [`d0003ec01c66`](https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0003ec01c667b731c139e23de3306a8b328ccf5)
`BPF_FUNC_map_update_elem()` | 3.19 | [`d0003ec01c66`](https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0003ec01c667b731c139e23de3306a8b328ccf5)
+`BPF_FUNC_msg_apply_bytes()` | 4.16 | [`2a100317c9eb`](https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/commit/?id=2a100317c9ebc204a166f16294884fbf9da074ce)
+`BPF_FUNC_msg_cork_bytes()` | 4.16 | [`91843d540a13`](https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/commit/?id=91843d540a139eb8070bcff8aa10089164436deb)
+`BPF_FUNC_msg_pull_data()` | 4.16 | [`015632bb30da`](https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/commit/?id=015632bb30daaaee64e1bcac07570860e0bf3092)
+`BPF_FUNC_msg_redirect_map()` | 4.16 | [`4f738adba30a`](https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/commit/?id=4f738adba30a7cfc006f605707e7aee847ffefa0)
`BPF_FUNC_perf_event_output()` | 4.4 | [`a43eec304259`](https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a43eec304259a6c637f4014a6d4767159b6a3aa3)
`BPF_FUNC_perf_event_read()` | 4.3 | [`35578d798400`](https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=35578d7984003097af2b1e34502bc943d40c1804)
`BPF_FUNC_perf_event_read_value()` | 4.15 | [`908432ca84fc`](https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=908432ca84fc229e906ba164219e9ad0fe56f755)
