ALSA: seq: Make dependency on UMP clearer

ALSA: seq: Make dependency on UMP clearer

CONFIG_SND_SEQ_UMP_CLIENT is a Kconfig for a sequencer client
corresponding to the UMP rawmidi, while we have another major knob
CONFIG_SND_SEQ_UMP that specifies whether the sequencer core supports
UMP packets or not.  Strictly speaking both of them are independent,
but practically seen, it makes no sense to enable
CONFIG_SND_SEQ_UMP_CLIENT without UMP support itself.

This patch makes such an implicit dependency clearer.  Now
CONFIG_SND_SEQ_UMP_CLIENT depends on both CONFIG_SND_UMP and
CONFIG_SND_SEQ_UMP.  Meanwhile, CONFIG_SND_SEQ_UMP is enabled as
default when CONFIG_SND_UMP is set.

Fixes: 81fd444aa371 ("ALSA: seq: Bind UMP device")
Link: https://patch.msgid.link/20250101125548.25961-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>