ALSA: echoaudio: Drop superfluous macro

Drop pci_device() macro that just leads to chip->pci->dev, and pass it
directly to request_firmware().  It was introduced for allowing the
external alsa-driver kernel module builds.  Since it was discontinued
years ago, we should clean it up now.

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

sound/pci/echoaudio/echoaudio.h

@@ -559,10 +559,4 @@ static inline int monitor_index(const struct echoaudio *chip, int out, int in)
 	return out * num_busses_in(chip) + in;
 }
 
-
-#ifndef pci_device
-#define pci_device(chip) (&chip->pci->dev)
-#endif
-
-
 #endif /* _ECHOAUDIO_H_ */