ALSA: ump: Fix -Wformat-truncation warnings

Filling the rawmidi name and substream name can be truncated, and this
leads to spurious compiler warnings due to -Wformat-truncation.
Although the truncation is the expected behavior, it'd be better to
truncate the string within "(...)"

This patch puts the precision specifies to each %s for fitting the
words within the size-limited strings.

Fixes: 5f11dd938fe7 ("ALSA: usb-audio: Attach legacy rawmidi after probing all UMP EPs")
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Takashi Iwai <[email protected]>
1 file changed