Support /product/bin

Bug: 80422611
Test: m -j succeeded and permissions of files under /product/bin are set
correctly

Change-Id: I83377d809c47c92da6b226d2853ea6a7462fb127
diff --git a/rootdir/etc/ld.config.txt b/rootdir/etc/ld.config.txt
index 51e3f9e..a0b1996 100644
--- a/rootdir/etc/ld.config.txt
+++ b/rootdir/etc/ld.config.txt
@@ -7,6 +7,7 @@
 # absolute path of an executable is selected.
 dir.system = /system/bin/
 dir.system = /system/xbin/
+dir.system = /product/bin/
 
 dir.vendor = /odm/bin/
 dir.vendor = /vendor/bin/