midi2: align ep_buf allocation with other stream-based classes

Keep the MIDI 2.0 drivers fully self-contained, with no changes to
shared or generic stack code.

Allocate the per-endpoint buffer in both midi2_host and midi2_device,
following the convention used by cdc, midi, vendor, and printer.

The class buffer struct is declared unconditionally and passed to
tu_edpt_stream_init on every init, so the streaming helpers operate
on the same shape across all classes.

0 files changed, 0 insertions, 0 deletions