Added virtual ALSA AVB driver

Author: NiklasWan

sound/drivers/Kconfig

@@ -1,4 +1,10 @@
 # SPDX-License-Identifier: GPL-2.0-only
+config SND_AVB
+	tristate "Generic AVB driver"
+	select SND_PCM
+        help
+          Say 'Y' or 'M' to include support for the PCM AVB device.
+
 config SND_MPU401_UART
         tristate
         select SND_RAWMIDI

sound/drivers/Makefile

@@ -23,4 +23,4 @@ obj-$(CONFIG_SND_MTS64) += snd-mts64.o
 obj-$(CONFIG_SND_PORTMAN2X4) += snd-portman2x4.o
 obj-$(CONFIG_SND_ML403_AC97CR) += snd-ml403-ac97cr.o
 
-obj-$(CONFIG_SND) += opl3/ opl4/ mpu401/ vx/ pcsp/
+obj-$(CONFIG_SND) += avb/ opl3/ opl4/ mpu401/ vx/ pcsp/

sound/drivers/avb/Makefile

@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for ALSA
+# Copyright (c) 2001 by Jaroslav Kysela <perex@perex.cz>
+#
+
+snd-avb-objs := avb_util.o msrp.o avdecc.o avtp.o avb.o
+
+obj-$(CONFIG_SND_AVB) += snd-avb.o