audio: remove the need for audio card CONFIG_* symbols

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1366303444-24620-3-git-send-email-pbonzini@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/hw/audio/pcspk.c b/hw/audio/pcspk.c
index d844e85..3a7285f 100644
--- a/hw/audio/pcspk.c
+++ b/hw/audio/pcspk.c
@@ -25,6 +25,7 @@
 #include "hw/hw.h"
 #include "hw/i386/pc.h"
 #include "hw/isa/isa.h"
+#include "hw/audio/audio.h"
 #include "audio/audio.h"
 #include "qemu/timer.h"
 #include "hw/timer/i8254.h"
@@ -108,7 +109,7 @@
     }
 }
 
-int pcspk_audio_init(ISABus *bus)
+static int pcspk_audio_init(ISABus *bus)
 {
     PCSpkState *s = pcspk_state;
     struct audsettings as = {PCSPK_SAMPLE_RATE, 1, AUD_FMT_U8, 0};
@@ -200,5 +201,6 @@
 static void pcspk_register(void)
 {
     type_register_static(&pcspk_info);
+    isa_register_soundhw("pcspk", "PC speaker", pcspk_audio_init);
 }
 type_init(pcspk_register)