Use 'hw' instead of 'default' for ALSA until we know more about 'default'.

modules/access/v4l2.c

@@ -178,7 +178,7 @@ static const char *psz_iomethod_list_text[] =
 #define AUDIO_METHOD_OSS 1
 #define OSS_DEFAULT "/dev/dsp"
 #define AUDIO_METHOD_ALSA 2
-#define ALSA_DEFAULT "default"
+#define ALSA_DEFAULT "hw"
 #define CFG_PREFIX "v4l2-"
 
 vlc_module_begin();