goldfish: audio support

(remove change to another file that escaped into the patch set)

From: Mike Lockwood <lockwood@google.com>

Provide a simple audio channel between the kernel and the emulator that host
sit. Queued for staging right now as this ought to be an ALSA driver not
just a dumb device of its own making.
Signed-off-by: Mike A. Chan <mikechan@google.com>
[x86 support]
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Signed-off-by: Xiaohui Xin <xiaohui.xin@intel.com>
Signed-off-by: Jun Nakajima <jun.nakajima@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
[Clean up]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/Kconfig

@@ -140,4 +140,6 @@ source "drivers/staging/fwserial/Kconfig"
 
 source "drivers/staging/zcache/Kconfig"
 
+source "drivers/staging/goldfish/Kconfig"
+
 endif # STAGING

drivers/staging/Makefile

@@ -62,3 +62,4 @@ obj-$(CONFIG_DGRP)		+= dgrp/
 obj-$(CONFIG_SB105X)		+= sb105x/
 obj-$(CONFIG_FIREWIRE_SERIAL)	+= fwserial/
 obj-$(CONFIG_ZCACHE)		+= zcache/
+obj-$(CONFIG_GOLDFISH)		+= goldfish/

drivers/staging/goldfish/Kconfig

+config GOLDFISH_AUDIO
+	tristate "Goldfish AVD Audio Device"
+	depends on GOLDFISH
+	---help---
+	  Emulated audio channel for the Goldfish Android Virtual Device
+

drivers/staging/goldfish/Makefile

+#
+# Makefile for the Goldfish audio driver
+#
+
+obj-$(CONFIG_GOLDFISH_AUDIO) += goldfish_audio.o

drivers/staging/goldfish/README

+- Move to using the ALSA framework not faking it
+- Fix the wrong user page DMA (moving to ALSA may fix that too)