xdp-tools: update to 1.5.8

xdp-tools: update to 1.5.8

Release Notes:
- https://github.com/xdp-project/xdp-tools/releases/tag/v1.5.8
- https://github.com/xdp-project/xdp-tools/releases/tag/v1.5.7
- https://github.com/xdp-project/xdp-tools/releases/tag/v1.5.6
- https://github.com/xdp-project/xdp-tools/releases/tag/v1.5.5
- https://github.com/xdp-project/xdp-tools/releases/tag/v1.5.4
- https://github.com/xdp-project/xdp-tools/releases/tag/v1.5.3
- https://github.com/xdp-project/xdp-tools/releases/tag/v1.5.2
- https://github.com/xdp-project/xdp-tools/releases/tag/v1.5.1
- https://github.com/xdp-project/xdp-tools/releases/tag/v1.5.0
- https://github.com/xdp-project/xdp-tools/releases/tag/v1.4.3

Remove upstreamed:
- 010-configure-respect-LDFLAGS.patch
- 020-libxdp-Use-__noinline__-reserved-attribute-for-XDP-d.patch
- 024-lib-allow-overwriting-W-flags-via-BPF_CFLAGS.patch
- 025-Add-BPF_LDFLAGS-to-allow-overwriting-llc-s-march-arg.patch

Remove unnecessary patch:
- 022-xdp-dump-add-missing-perf_event-include-for-bpf-and-.patch
  (The included headers were incorrect. Some musl toolchain headers
   appeared in the BPF bytecode generation path, which should not
   happen. This issue is resolved by overriding CFLAGS and LDFLAGS.)

Remove `PKG_FLAGS:=nonshared`. With this flag enabled, the package is
compiled separately for every target. Removing it limits compilation
to each CPU architecture instead, significantly reducing unnecessary
build overhead.

Add new tools:
- xdp-bench:
  XDP-bench is a benchmarking utility for exercising the different operation modes
  of XDP. It is intended to be a simple program demonstrating the various operating
  modes; these include dropping packets, hairpin forwarding (using the XDP_TX return
  code), and redirection using the various in-kernel packet redirection facilities.
- xdp-forward:
  xdp-forward is an XDP forwarding plane, which will accelerate
  packet forwarding using XDP. To use it, simply load it on
  the set of interfaces to accelerate forwarding between.
- xdp-monitor:
  XDP-monitor is a tool that monitors various XDP related statistics and
  events using BPF tracepoints infrastructure, trying to be as low overhead
  as possible.
- xdp-trafficgen:
  XDP-trafficgen is a packet generator utilising the XDP kernel subsystem
  to generate packets transmit them through a network interface.
  Packets are dynamically generated and transmitted in the kernel,
  allowing for high performance (millions of packets per second per core).

Co-Developed-by: Til Kaiser <mail@tk154.de>
Link: https://github.com/openwrt/openwrt/pull/20903
Signed-off-by: Nick Hainke <vincent@systemli.org>