[ALSA] Move vmaster code to sound core

Move the codes for virtual master controls to sound core part so that
not only hda-intel drivers can use it.

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

1 files changed, 4 insertions, 0 deletions

diff --git a/sound/core/Kconfig b/sound/core/Kconfig
index 829ca38b595..a8d71c6c8e7 100644
--- a/sound/core/Kconfig
+++ b/sound/core/Kconfig
@@ -181,3 +181,7 @@ config SND_PCM_XRUN_DEBUG
           It is usually not required, but if you have trouble with
           sound clicking when system is loaded, it may help to determine
           the process or driver which causes the scheduling gaps.
+
+config SND_VMASTER
+        bool
+        depends on SND