Fix audio broken for sdk builds.

Add missing audio policy configuration file copy for sdk product.

Issue 6289703.

Change-Id: Ica9ce813d945dd76b836c8bd68f3e168a7d537e0
diff --git a/target/product/sdk.mk b/target/product/sdk.mk
index 5059950..233d4e0 100644
--- a/target/product/sdk.mk
+++ b/target/product/sdk.mk
@@ -143,7 +143,8 @@
 	development/tools/emulator/system/camera/media_profiles.xml:system/etc/media_profiles.xml \
 	development/tools/emulator/system/camera/media_codecs.xml:system/etc/media_codecs.xml \
 	frameworks/native/data/etc/android.hardware.touchscreen.multitouch.jazzhand.xml:system/etc/permissions/android.hardware.touchscreen.multitouch.jazzhand.xml \
-	frameworks/native/data/etc/android.hardware.camera.autofocus.xml:system/etc/permissions/android.hardware.camera.autofocus.xml
+	frameworks/native/data/etc/android.hardware.camera.autofocus.xml:system/etc/permissions/android.hardware.camera.autofocus.xml \
+	hardware/libhardware_legacy/audio/audio_policy.conf:system/etc/audio_policy.conf
 
 $(call inherit-product-if-exists, frameworks/base/data/fonts/fonts.mk)
 $(call inherit-product-if-exists, frameworks/base/data/keyboards/keyboards.mk)