NEWS.adoc: debug level initialized earlier now [#2259]

Checked for a similar need in other programs - nut-scanner does it already,
and others start with the getopt() loop.

Signed-off-by: Jim Klimov <jimklimov+nut@gmail.com>

Author: jimklimov

NEWS.adoc

@@ -109,6 +109,9 @@ https://github.com/networkupstools/nut/milestone/10
      other media (like `nutdrv_qx` built for serial-only support), and built
      in fact without USB support but used for USB devices, with some more
      information to make troubleshooting easier. [#2259]
+   * Driver programs with debug tracing support via `-D` CLI option and/or
+     the `NUT_DEBUG_LEVEL` environment variable now check those earlier in
+     their life-time, so that initialization routine can be debugged. [#2259]
 
  - powerpanel text driver now handles status responses in any format and should
    support most devices [#2156]