ALSA: oxygen: rename pcm_dev_cfg

Rename the pcm_dev_cfg field to device_config because there will be
additional flags that do not describe PCM devices.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
diff --git a/sound/pci/oxygen/oxygen.h b/sound/pci/oxygen/oxygen.h
index 914b8f4..30cd996 100644
--- a/sound/pci/oxygen/oxygen.h
+++ b/sound/pci/oxygen/oxygen.h
@@ -78,7 +78,7 @@
 			    unsigned int reg, unsigned int mute);
 	const unsigned int *dac_tlv;
 	size_t model_data_size;
-	unsigned int pcm_dev_cfg;
+	unsigned int device_config;
 	u8 dac_channels;
 	u8 dac_volume_min;
 	u8 dac_volume_max;