tools: kmod: remove snd_ump before snd_rawmidi

On MIDI2-enabled kernels snd_ump is loaded even when nothing is using
it, and it holds a reference on snd_rawmidi. sof_remove.sh has no entry
for it, so removal fails:

  RMMOD	snd_rawmidi
  rmmod: ERROR: Module snd_rawmidi is in use by: snd_ump
  /home/ubuntu/sof-test/tools/kmod/sof_remove.sh FAILED

That aborts reload_drivers() and every subsequent test case that reloads
the driver stack fails with it -- on a NVL-S run this turned into ~15
consecutive failures starting at check-sof-logger.

Remove snd_ump just before snd_rawmidi. remove_module() already SKIPs
modules that are not loaded, so this is a no-op on kernels built without
CONFIG_SND_UMP.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: 2 people

tools/kmod/sof_remove.sh

@@ -346,6 +346,12 @@ remove_module snd_pcm
 remove_module snd_ctl_led
 remove_module snd_seq_midi
 remove_module snd_seq_midi_event
+# MIDI 2.0 UMP support holds a reference on snd_rawmidi (and on snd_seq_device),
+# so it has to go first. It gets loaded on MIDI2-enabled kernels even when
+# nothing is using it, which made snd_rawmidi removal fail with
+#   rmmod: ERROR: Module snd_rawmidi is in use by: snd_ump
+# aborting reload_drivers() and cascading into every driver-reload test case.
+remove_module snd_ump
 remove_module snd_rawmidi
 remove_module snd_seq_dummy
 remove_module snd_seq