Update makefiles. (2/2)

Adds default configuration for all hals.

Bug: 38415912
Test: pass
Change-Id: Idd1f3a2b7b16ad956d31784a513e93a066cdd02e
diff --git a/graphics/composer/2.1/Android.bp b/graphics/composer/2.1/Android.bp
index ed5c193..ac40f83 100644
--- a/graphics/composer/2.1/Android.bp
+++ b/graphics/composer/2.1/Android.bp
@@ -55,6 +55,7 @@
 
 cc_library_shared {
     name: "android.hardware.graphics.composer@2.1",
+    defaults: ["hidl-module-defaults"],
     generated_sources: ["android.hardware.graphics.composer@2.1_genc++"],
     generated_headers: ["android.hardware.graphics.composer@2.1_genc++_headers"],
     export_generated_headers: ["android.hardware.graphics.composer@2.1_genc++_headers"],