ALSA: usb-audio: Inform inconsistent protocols in GTBs

When parsing Group Terminal Blocks, we overwrote the preferred
protocol and the protocol capabilities silently from the last parsed
GTB.  This patch adds the information print indicating the unexpected
overrides instead of silent action.

Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230523075358.9672-17-tiwai@suse.de


Signed-off-by: Takashi Iwai <tiwai@suse.de>