ALSA: seq: ump: fix typo in system_2p_ev_to_ump_midi1()

Fix data->system.parm2 typo.

Fixes: e9e0281 ("ALSA: seq: Automatic conversion of UMP events")
Signed-off-by: Minjie Du <duminjie@vivo.com>
Link: https://lore.kernel.org/r/20230705093545.14695-1-duminjie@vivo.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

Author: Minjie Du

sound/core/seq/seq_ump_convert.c

@@ -714,7 +714,7 @@ static int system_2p_ev_to_ump_midi1(const struct snd_seq_event *event,
 {
 	data->system.status = status;
 	data->system.parm1 = (event->data.control.value >> 7) & 0x7f;
-	data->system.parm1 = event->data.control.value & 0x7f;
+	data->system.parm2 = event->data.control.value & 0x7f;
 	return 1;
 }