Read product/device RRO dirs separately from soong

This change splits the LOCAL_SOONG_RRO_DIRS into two,
representing RRO dirs that originated from device and
product overlay configs, respectively.

Also plumb the device/product configs in separately.

Bug: 127758779
Test: verify noop on presubmit targets
Change-Id: Iddee1b4d7303b7ecaeced91216ea82fe29123770
diff --git a/core/clear_vars.mk b/core/clear_vars.mk
index 1e3f6ae..7485b8b 100644
--- a/core/clear_vars.mk
+++ b/core/clear_vars.mk
@@ -263,7 +263,8 @@
 LOCAL_SOONG_LINK_TYPE :=
 LOCAL_SOONG_PROGUARD_DICT :=
 LOCAL_SOONG_RESOURCE_EXPORT_PACKAGE :=
-LOCAL_SOONG_RRO_DIRS :=
+LOCAL_SOONG_DEVICE_RRO_DIRS :=
+LOCAL_SOONG_PRODUCT_RRO_DIRS :=
 LOCAL_SOONG_STATIC_LIBRARY_EXTRA_PACKAGES :=
 LOCAL_SOONG_TOC :=
 LOCAL_SOONG_UNSTRIPPED_BINARY :=