Add libc_malloc_hook to list of libraries.

Bug: 30561479

Test: Build from scratch and verify the library is present.
Change-Id: I53f30d694cff202ffc93491485ed3c845de07862
diff --git a/target/product/embedded.mk b/target/product/embedded.mk
index 18eeb40..3f1d6df 100644
--- a/target/product/embedded.mk
+++ b/target/product/embedded.mk
@@ -51,6 +51,7 @@
     libbinder \
     libc \
     libc_malloc_debug \
+    libc_malloc_hooks \
     libcutils \
     libdl \
     libgui \