Determine product partition path on build time

Path of product partitoin can be set as /product or /system/product
whether generate extra product partition or not.
Substitute %PRODUCT% to relevant path to know linker which path should
search and permit.

Bug: 110286945
Test: m -j # Check /system/etc/ld.config.$(PLATFORM_VNDK_VERSION).txt
Change-Id: I6ca177d0c9c5af00ad821879fece40848331fc8d
diff --git a/rootdir/Android.mk b/rootdir/Android.mk
index 70b6a3e..478b8d0 100644
--- a/rootdir/Android.mk
+++ b/rootdir/Android.mk
@@ -201,6 +201,7 @@
 	$$(hide) sed -i -e 's?%VNDK_CORE_LIBRARIES%?$$(PRIVATE_VNDK_CORE_LIBRARIES)?g' $$@
 	$$(hide) sed -i -e 's?%SANITIZER_RUNTIME_LIBRARIES%?$$(PRIVATE_SANITIZER_RUNTIME_LIBRARIES)?g' $$@
 	$$(hide) sed -i -e 's?%VNDK_VER%?$$(PRIVATE_VNDK_VERSION)?g' $$@
+	$$(hide) sed -i -e 's?%PRODUCT%?$$(TARGET_COPY_OUT_PRODUCT)?g' $$@
 
 llndk_libraries_list :=
 vndksp_libraries_list :=