ALSA: oxfw: add an comment to Kconfig for TASCAM FireOne

A commit to add support for this model should have added a comment
about this model to Kconfig.

Fixes: 759a2f40('ALSA: oxfw: add an entry for TASCAM FireOne')
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

sound/firewire/Kconfig

@@ -38,6 +38,7 @@ config SND_OXFW
 	   * Mackie(Loud) Tapco Link.Firewire
 	   * Mackie(Loud) d.2 pro/d.4 pro
 	   * Mackie(Loud) U.420/U.420d
+	   * TASCAM FireOne
 
 	  To compile this driver as a module, choose M here: the module
 	  will be called snd-oxfw.