ALSA: snd-usb-caiaq: rename 'dev' to 'cdev'

This is needed in order to make the device namespace cleaner, and will
help when moving this driver over to dev_*() logging.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/usb/caiaq/midi.h b/sound/usb/caiaq/midi.h
index 380f984..60bf344 100644
--- a/sound/usb/caiaq/midi.h
+++ b/sound/usb/caiaq/midi.h
@@ -1,8 +1,9 @@
 #ifndef CAIAQ_MIDI_H
 #define CAIAQ_MIDI_H
 
-int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *dev);
-void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *dev, int port, const char *buf, int len);
+int snd_usb_caiaq_midi_init(struct snd_usb_caiaqdev *cdev);
+void snd_usb_caiaq_midi_handle_input(struct snd_usb_caiaqdev *cdev,
+				     int port, const char *buf, int len);
 void snd_usb_caiaq_midi_output_done(struct urb *urb);
 
 #endif /* CAIAQ_MIDI_H */