x86: sound: Add sound support for samus (broadwell)

Add a sound driver for samus which ties together the audio codec and
I2S controller.

For now broadwell_sound is commented out in the makefile since we cannot
compile it without sound support enabled. The next commit fixes this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/drivers/sound/Makefile b/drivers/sound/Makefile
index fe3ccd6..452a5a1 100644
--- a/drivers/sound/Makefile
+++ b/drivers/sound/Makefile
@@ -18,5 +18,5 @@
 obj-$(CONFIG_SOUND_INTEL_HDA)	+= hda_codec.o
 obj-$(CONFIG_SOUND_I8254)	+= i8254_beep.o
 obj-$(CONFIG_SOUND_RT5677)	+= rt5677.o
-obj-$(CONFIG_INTEL_BROADWELL)	+= broadwell_i2s.o
+obj-$(CONFIG_INTEL_BROADWELL)	+= broadwell_i2s.o #broadwell_sound.o
 obj-$(CONFIG_SOUND_IVYBRIDGE)	+= ivybridge_sound.o