Add libdl_android.so to the system partition absence check.

Test: m
Bug: 144343305
Change-Id: Ie3a9698d4d369a68ce2baffbab448af63ead4410
diff --git a/core/main.mk b/core/main.mk
index 6935efa..5a1693f 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -1159,6 +1159,7 @@
   libc_malloc_debug.so \
   libc_malloc_hooks.so \
   libdl.so \
+  libdl_android.so \
   libm.so \
 
 # Conscrypt APEX libraries