Add module 'idmap'.

Change-Id: Idacd9d7107dedf235b312a252c36c7d4d4e6bc31
diff --git a/target/product/core.mk b/target/product/core.mk
index abb2d9f..0736502 100644
--- a/target/product/core.mk
+++ b/target/product/core.mk
@@ -62,6 +62,7 @@
     framework-res \
     hprof-conv \
     icu.dat \
+    idmap \
     installd \
     ip \
     ip-up-vpn \