Export TARGET_BOARD_PLATFORM for AoC

Bug: 215535889
Change-Id: Idba3bf9e9a15625db1a36bee5c30b8c42dea8a52
diff --git a/device.mk b/device.mk
index d280c5a..826645c 100644
--- a/device.mk
+++ b/device.mk
@@ -963,6 +963,13 @@
 	vendor/google/whitechapel/audio/interfaces
 
 $(call soong_config_set,aoc_audio_board,platform,$(TARGET_BOARD_PLATFORM))
+
+## AoC soong
+PRODUCT_SOONG_NAMESPACES += \
+        vendor/google/whitechapel/aoc
+
+$(call soong_config_set,aoc,target_soc,$(TARGET_BOARD_PLATFORM))
+
 #
 ## Audio properties
 PRODUCT_PROPERTY_OVERRIDES += \