audio-driver: Update build files for LA automotive

enable conditional build for audio driver modules for LA
automotive.

Change-Id: Ifb18ea6f8af531a99e29904c2245424657b42df7
Signed-off-by: Cong Tang <congt@codeaurora.org>
diff --git a/asoc/Android.mk b/asoc/Android.mk
index ca2dffc..1293f5f 100644
--- a/asoc/Android.mk
+++ b/asoc/Android.mk
@@ -5,8 +5,12 @@
 # Check if this driver needs be built for current target
 ifeq ($(call is-board-platform,msmnile),true)
 TARGET := msmnile
+ifeq ($(TARGET_PRODUCT), $(filter $(TARGET_PRODUCT), msmnile_au))
+AUDIO_SELECT  := CONFIG_SND_SOC_SA8155=m
+else
 AUDIO_SELECT  := CONFIG_SND_SOC_SM8150=m
 endif
+endif
 
 ifeq ($(call is-board-platform,$(MSMSTEPPE)),true)
 TARGET := talos