Merge remote-tracking branch 'origin/oran_fhi_f_dpdk_21_plus' into integration_2025_w28 (!3504)

Improvements to the FHI for enabling further use cases

These changes to the FHI were primarily thought to enable the integration of
the intel ACC ( !3344 ) in parallel of the FHI.
I preferred to make a separate MR because I believe this topic is orthogonal
enough to be handled separately and because I wanted to bring even further
improvements.
The improvements that it actually brings are:

- Enable compiling and running xran F release with DPDK 21+
- Enable including a BBDEV device in addition of the ethernet device for the
  FHI when performing EAL init, which is necessary for using the intel ACC
  with the FHI.
- Fix an issue in usage of pkgconfig in xran E and F release. This enables to
  reliably build xran with the version of DPDK requested to pkgconfig while
  before this fix xran was always selecting the headers installed in /usr/local.

executables/nr-ru.c

@@ -1341,6 +1341,9 @@ int start_rf(RU_t *ru) {
 }
 
 int stop_rf(RU_t *ru) {
+  if (ru->rfdevice.trx_get_stats_func) {
+    ru->rfdevice.trx_get_stats_func(&ru->rfdevice);
+  }
   ru->rfdevice.trx_end_func(&ru->rfdevice);
   return 0;
 }