linux: add ac97 to the pci bus

Add an ac97 device that plays audio to /dev/null.

BUG=chromium:781398
TEST=Test crosvm with null device

Change-Id: I3849974b732fc1550ec2bf0f805726bf2ca296f6
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1398641
Commit-Ready: Chih-Yang Hsia <paulhsia@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Chih-Yang Hsia <paulhsia@chromium.org>
Reviewed-by: Chih-Yang Hsia <paulhsia@chromium.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 29ad554..084d208 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -31,6 +31,7 @@ tpm = ["devices/tpm"]
 
 [dependencies]
 arch = { path = "arch" }
+audio_streams = "*"
 bit_field = { path = "bit_field" }
 devices = { path = "devices" }
 gpu_buffer = { path = "gpu_buffer", optional = true }