Build adb_root

Change-Id: I646b9db5543b47f777b443f601e9c2c6fa7ef08b
diff --git a/config/common.mk b/config/common.mk
index 5839893..dd9420e 100644
--- a/config/common.mk
+++ b/config/common.mk
@@ -229,6 +229,8 @@
 
 # Conditionally build in su
 ifneq ($(TARGET_BUILD_VARIANT),user)
+PRODUCT_PACKAGES += \
+    adb_root
 ifeq ($(WITH_SU),true)
 PRODUCT_PACKAGES += \
     su