ALSA: seq: Notify UMP EP and FB changes

ALSA: seq: Notify UMP EP and FB changes

So far we notify the sequencer client and port changes upon UMP FB
changes, but those aren't really corresponding to the UMP updates.
e.g. when a FB info gets updated, it's not notified but done only when
some of sequencer port attribute is changed.  This is no ideal
behavior.

This patch adds the two new sequencer event types for notifying the
UMP EP and FB changes via the announce port.  The new event takes
snd_seq_ev_ump_notify type data, which is compatible with
snd_seq_addr (where the port number is replaced with the block
number).

The events are sent when the EP and FB info gets updated explicitly
via ioctl, or the backend UMP receives the corresponding UMP
messages.

The sequencer protocol version is bumped to 1.0.5 along with it.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20250110155943.31578-9-tiwai@suse.de